Author profile: Arias Carrasco, José Miguel
Institutional data
| Name | Arias Carrasco, José Miguel |
| Department | Física Atómica, Molecular y Nuclear |
| Knowledge area | Física Atómica, Molecular y Nuclear |
| Professional category | Catedrático de Universidad |
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| Publications |
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Article
 Extended Analytical Solutions of the Bohr Hamiltonian with the Sextic Oscillator: Pt-Os IsotopesExtended Analytical Solutions of the Bohr Hamiltonian with the Sextic Oscillator: Pt-Os Isotopes
(Institute of Physics Publishing, 2023-01-01)
The sextic oscillator adapted to the Bohr Hamiltonian has been used to describe even Pt and Os isotopes from A = 188 to ... |
Article
Digital quantum simulation of an extended Agassi model: Using machine learning to disentangle its phase-diagramDigital quantum simulation of an extended Agassi model: Using machine learning to disentangle its phase-diagram
(American Physical Society, 2022-01-01)
A digital quantum simulation for the extended Agassi model is proposed using a quantum platform with eight trapped ions. ... |
Article
A digital quantum simulation of the Agassi modelA digital quantum simulation of the Agassi model
(Elsevier, 2022-01-01)
A digital quantum simulation of the Agassi model from nuclear physics is proposed and analyzed. The proposal is worked out ... |
Article
Entropies and IPR as Markers for a Phase Transition in a Two-Level Model for Atom–Diatomic Molecule CoexistenceEntropies and IPR as Markers for a Phase Transition in a Two-Level Model for Atom–Diatomic Molecule Coexistence
(Multidisciplinary Digital Publishing Institute (MDPI), 2022-01-01)
A quantum phase transition (QPT) in a simple model that describes the coexistence of atoms and diatomic molecules is ... |
| Final Degree Project |
Article
Review of Shape Phase Transition Studies for Bose-Fermi Systems: The Effect of the Odd-Particle on the Bosonic CoreReview of Shape Phase Transition Studies for Bose-Fermi Systems: The Effect of the Odd-Particle on the Bosonic Core
(MDPI, 2021-01-01)
The quantum phase transition studies we have done during the last few years for odd-even systems are reviewed. The focus ... |
Article
Description of continuum structures in a discrete basis: Three-body resonances and two-nucleon decaysDescription of continuum structures in a discrete basis: Three-body resonances and two-nucleon decays
(SciPost, 2020-01-01)
Weakly bound and unbound three-body nuclei are studied by using the pseudostate method within the hyperspherical formalism. ... |
Master's Final Project
Desarrollo de algoritmos basados en inteligencia artificial para clasificaci ́on de eventos en los experimentos DEAP-3600Desarrollo de algoritmos basados en inteligencia artificial para clasificaci ́on de eventos en los experimentos DEAP-3600
(2020-01-01)
La inteligencia artificial y especialmente las redes neuronales están siendo ampliamente utilizadas en física de partículas ... |
Article
Comment on "from Coulomb Excitation Cross Sections to Nonresonant Astrophysical Rates in Three-body Systems: The Ne 17 Case"Comment on "from Coulomb Excitation Cross Sections to Nonresonant Astrophysical Rates in Three-body Systems: The Ne 17 Case"
(American Physical Society, 2020-01-01)
Parfenova et al. state in [Phys. Rev. C 98, 034608 (2018)2469-998510.1103/PhysRevC.98.034608] that the results presented ... |
| Final Degree Project |
Article
Algebraic DVR Approaches Applied to Describe the Stark EffectAlgebraic DVR Approaches Applied to Describe the Stark Effect
(MDPI, 2020-01-01)
Two algebraic approaches based on a discrete variable representation are introduced and applied to describe the Stark ... |
| Master's Final Project |
Master's Final Project
Simulaciones Monte Carlo para el desarrollo de un prototipo de tomógrafo de protones con aplicación en protonterapiaSimulaciones Monte Carlo para el desarrollo de un prototipo de tomógrafo de protones con aplicación en protonterapia
(2019-09-01)
El objetivo de este trabajo es demostrar la viabilidad de obtener imágenes médicas con protones, utilizando detectores de ... |
Presentation
A beyond mean-field study of the Tavis- Cummings modelA beyond mean-field study of the Tavis- Cummings model
(American Institute of Physics, 2019-09-01)
A beyond mean-field study of the Tavis-Cummings (TC) model is developed. This is the simplest model for describing the ... |
Article
Number conserving particle-hole RPA for superfluid nucleiNumber conserving particle-hole RPA for superfluid nuclei
(Elsevier, 2019-08-01)
We present a number conserving particle-hole RPA theory for collective excitations in the transition from normal to ... |
Master's Final Project
BRIKEN measurements of half-lives for Ce to Nd nuclei relevant for the formation of the r-process rare-earth peak (A~160)BRIKEN measurements of half-lives for Ce to Nd nuclei relevant for the formation of the r-process rare-earth peak (A~160)
(2019-07-01)
The Rare Earth Peak (REP) is a small, but clearly distinctive, peak around mass A 160 in the elemental solar system ... |
Master's Final Project
Characterisation of the DTAS Total Absorption Spectrometer 100Sn for a measurement of decay in Riken Nishina CenterCharacterisation of the DTAS Total Absorption Spectrometer 100Sn for a measurement of decay in Riken Nishina Center
(2019-06-04)
This Master Thesis mainly pivots on describing the assembly, preparation and testing of the Decay Total Absorption -ray ... |
Final Degree Project
Estudio de transiciones de fase cuánticas en el modelo de RabiEstudio de transiciones de fase cuánticas en el modelo de Rabi
(2019-06-01)
El objetivo de este trabajo es realizar un estudio sobre las transiciones de fase cuánticas que se presentan en el modelo ... |
Article
An extended Agassi model: Algebraic structure, phase diagram, and large size limitAn extended Agassi model: Algebraic structure, phase diagram, and large size limit
(Institute of Physics Publishing, 2019-01-01)
The Agassi model (Agassi 1968 Nucl. Phys. A 116 49) is a schematic two-level model that involves pairing and monopole-monopole ... |
Presentation
Scaling properties of the Lipkin model at the critical pointScaling properties of the Lipkin model at the critical point
(American Institute of Physics, 2019-01-01)
The influence of Franco Iachello in Physics during the last 50 years and, in particular, in the use of algebraic methods ... |
Final Degree Project
Núcleos halo: un estudio semianalíticoNúcleos halo: un estudio semianalítico
(2018-06-01)
El presente trabajo se centra en el estudio de núcleos exóticos ligeros, en concreto, en algunos núcleos denominados núcleos ... |
Article
Be 9 + Sn 120 scattering at near-barrier energies within a four-body modelBe 9 + Sn 120 scattering at near-barrier energies within a four-body model
(American Physical Society, 2018-01-01)
Cross sections for elastic and inelastic scattering of the weakly bound Be9 nucleus on a Sn120 target have been measured ... |
Article
Phase diagram of an extended Agassi modelPhase diagram of an extended Agassi model
(American Physical Society, 2018-01-01)
Background: The Agassi model [D. Agassi, Nucl. Phys. A 116, 49 (1968)NUPABL0375-947410.1016/0375-9474(68)90482-X] is an ... |
Article
Excited-state quantum phase transitions in a two-fluid Lipkin modelExcited-state quantum phase transitions in a two-fluid Lipkin model
(American Physical Society, 2017-05-30)
Background: Composed systems have become of great interest in the framework of ground-state quantum phase transitions ... |
Article
Three-body radiative capture reactionsThree-body radiative capture reactions
(EDP Sciences, 2017-01-01)
Radiative capture reaction rates for 6He, 9Be and 17Ne formation at astrophysical conditions are studied within a three-body ... |
Article
9Be scattering within a four-body continuum-discretized coupled-channels framework9Be scattering within a four-body continuum-discretized coupled-channels framework
(EDP Sciences - SIF, 2016-05-11)
The scattering of 9Be on 208Pb is addressed within a four-body Continuum-Discretized Coupled-Channels (CDCC) framework, ... |
PhD Thesis
 Weakly-bound three-body nuclear systems: structure, reactions and astrophysical implicationsWeakly-bound three-body nuclear systems: structure, reactions and astrophysical implications
(2016-05-11)
Esta memoria de tesis surge con la idea de estudiar sistemas nucleares de interés astrofísico.La comprensión de los procesos ... |
Article
Determining astrophysical three-body radiative capture reaction rates from inclusive Coulomb break-up measurementsDetermining astrophysical three-body radiative capture reaction rates from inclusive Coulomb break-up measurements
(American Physical Society, 2016-04-12)
A relationship between the Coulomb inclusive break-up probability and the radiative capture reaction rate for weakly bound ... |
Article
Phase diagram of the two-fluid Lipkin model: A "butterfly" catastrophePhase diagram of the two-fluid Lipkin model: A "butterfly" catastrophe
(American Physical Society, 2016-03-31)
Background: In the past few decades quantum phase transitions have been of great interest in nuclear physics. In this ... |
Article
Radiative capture reaction for Ne 17 formation within a full three-body modelRadiative capture reaction for Ne 17 formation within a full three-body model
(American Physical Society, 2016-01-01)
Background: The breakout from the hot Carbon-Nitrogen-Oxigen (CNO) cycles can trigger the rp-process in type I x-ray bursts. ... |
Article
Recent developments for the calculation of elastic and non-elastic breakup of weakly-bound nucleiRecent developments for the calculation of elastic and non-elastic breakup of weakly-bound nuclei
(Jagiellonian University Press, 2016-01-01)
In this contribution, we review some recent theoretical advances for the calculation of breakup cross sections in reactions induced by weakly-bound nuclei. |
Article
β-decay rates of 121–131Cs in the microscopic interacting boson-fermion modelβ-decay rates of 121–131Cs in the microscopic interacting boson-fermion model
(American Physical Society, 2016-01-01)
β -decay rates of 121–131 Cs have been calculated in the framework of the neutron-proton interacting boson- fermion model ... |
Article
Evidence of strong dynamic core excitation in 19C resonant break-upEvidence of strong dynamic core excitation in 19C resonant break-up
(American Physical Society, 2016-01-01)
The resonant breakup of 19C on protons measured at RIKEN [Y. Satou et al., Phys. Lett. B 660, 320 (2008)] is analyzed in ... |
Article
Reactions induced by 9Be in a four-body continuum-discretized coupled-channels frameworkReactions induced by 9Be in a four-body continuum-discretized coupled-channels framework
(Springer Nature, 2015-06-01)
We investigate the elastic scattering of 9Be on 208Pb at beam energies above (50MeV) and below (40MeV) the Coulomb barrier. ... |
Presentation
Quantum phase transitions in odd-A nuclei: The effect of the odd particle from spherical to oblate shapesQuantum phase transitions in odd-A nuclei: The effect of the odd particle from spherical to oblate shapes
(Institute of Physics Publishing, 2015-01-01)
Quantum shape-phase transitions in odd-nuclei are investigated within the framework of the interacting boson-fermion model ... |
Article
Be 9 elastic scattering on Pb 208 and Al 27 within a four-body reaction frameworkBe 9 elastic scattering on Pb 208 and Al 27 within a four-body reaction framework
(American Physical Society, 2015-01-01)
We investigate low-energy Be9 elastic scattering on two different targets (heavy, light) within a four-body framework using ... |
Article
Core excitations in the structure and reactions of halo nucleiCore excitations in the structure and reactions of halo nuclei
(EDP Sciences, 2014-03-20)
We analyse the resonant break-up of halo nuclei including possible excitations of the core both in the structure of the ... |
Article
Astrophysical reaction rate for 9 Be formation within a three-body approachAstrophysical reaction rate for 9 Be formation within a three-body approach
(American Physical Society, 2014-01-01)
The structure of the Borromean nucleus 9Be (α+α+n) is addressed within a three-body approach using the analytical transformed ... |
Article
Semi-microscopic folding model for the description of two-body halo nucleiSemi-microscopic folding model for the description of two-body halo nuclei
(American Physical Society, 2014-01-01)
One-neutron halo nuclei, composed of a weakly bound particle coupled to a core nucleus, are studied within a particle-plus-core ... |
Article
Disentangling phase transitions and critical points in the proton-neutron interacting boson model by catastrophe theoryDisentangling phase transitions and critical points in the proton-neutron interacting boson model by catastrophe theory
(Elsevier, 2014-01-01)
We introduce the basic concepts of catastrophe theory needed to derive analytically the phase diagram of the proton–neutron ... |
Article
Quantum shape phase transitions from spherical to deformed for Bose-Fermi systems: the effect of the odd particle around the critical pointQuantum shape phase transitions from spherical to deformed for Bose-Fermi systems: the effect of the odd particle around the critical point
(EDP sciences, 2014-01-01)
Quantum phase transitions in odd-nuclei are investigated within the framework of the interacting boson-fermion model with ... |
Article
Quantum phase transitions of atom-molecule Bose mixtures in a double-well potentialQuantum phase transitions of atom-molecule Bose mixtures in a double-well potential
(2014-01-01)
The ground state and spectral properties of Bose gases in double-well potentials are studied in two different scenarios: ... |
Article
Continuum-discretized coupled-channels calculations with core excitationContinuum-discretized coupled-channels calculations with core excitation
(American Physical Society, 2014-01-01)
The effect of core excitation in the elastic scattering and breakup of a two-body halo nucleus on a stable target nucleus ... |
Article
The one nucleon transfer operator in the microscopic IBM without NOAThe one nucleon transfer operator in the microscopic IBM without NOA
(Elsevier, 2014-01-01)
The mapping of the single fermion creation operator (ci†) onto the Interacting Boson-Fermion space (IBFM) is revisited ... |
Article
Analytical transformed harmonic oscillator basis for three-body nuclei of astrophysical interest: Application to 6HeAnalytical transformed harmonic oscillator basis for three-body nuclei of astrophysical interest: Application to 6He
(American Physical Society, 2013-06-29)
Recently, a square-integrable discrete basis, obtained performing a simple analytical local scale transformation to the ... |
Article
Three-body nuclei and their astrophysical implications: The case of 6HeThree-body nuclei and their astrophysical implications: The case of 6He
(American Institute of Physics, 2013-01-01)
The analytic THO method [1] is generalized to study three-body nuclei of astrophysical interest, and applied to 6He. Results are consistent with previous publications and experimental data [2, 3]. |
Presentation
Decoherence and quantum quench: Their relationship with excited state quantum phase transitionsDecoherence and quantum quench: Their relationship with excited state quantum phase transitions
(American Institute of Physics, 2012-01-01)
We study the similarities and differences between the phenomena of Quantum Decoherence and Quantum Quench in presence of ... |
Presentation
A beyond mean field study of Bose gases in a double-well potential with a Feshbach resonanceA beyond mean field study of Bose gases in a double-well potential with a Feshbach resonance
(American Institute of Physics, 2012-01-01)
The Bose-Hubbard model coupled to a Feshbach resonance is studied. Quantum phase transitions are analyzed within a beyond ... |
Presentation
Excited state quantum phase transitions and chaos in the Dicke modelExcited state quantum phase transitions and chaos in the Dicke model
(American Institute of Physics, 2012-01-01)
In this contribution, the critical behavior of excited state quantum phase transitions (ESQPT's) and its relation to order ... |
Presentation
Core excitation effects in halo nuclei using a transformed oscillator basisCore excitation effects in halo nuclei using a transformed oscillator basis
(American Institute of Physics, 2012-01-01)
A recent generalization of the Transformed Harmonic Oscillator basis, intended to consider core excitations in the structure ... |
Presentation
Core excitation effects in the breakup of halo nucleiCore excitation effects in the breakup of halo nuclei
(American Institute of Physics, 2012-01-01)
The role of core excitation in the structure and dynamics of two-body halo nuclei is investigated. We present calculations ... |
Article
Review of critical point symmetries and shape phasetransitions within algebraic and collective modelsReview of critical point symmetries and shape phasetransitions within algebraic and collective models
(2012-01-01)
Several aspect of shape phase transitions and critical point symmstries are reviewed inthis contribution within the ... |
Article
Particle motion in a deformed potential using a transformed oscillator basisParticle motion in a deformed potential using a transformed oscillator basis
(American Physical Society, 2012-01-01)
The quantum description of a particle moving in a deformed potential is investigated. A pseudostate (PS) basis is used to ... |
PhD Thesis
Descripción de la estructura y reacciones de núcleos exóticos en una base de oscilador armónico transformadoDescripción de la estructura y reacciones de núcleos exóticos en una base de oscilador armónico transformado
(2012-01-01)
La estructura del presente trabajo queda como sigue. En la sección 1.1 se exponen los modelos que se utilizaran para la ... |
Presentation
Stabilization method in two-body systems with core excitationsStabilization method in two-body systems with core excitations
(American Institute of Physics, 2012-01-01)
The validity of the stabilization method in core+valence systems including the possibility of exciting the core is studied. ... |
PhD Thesis
Estudio de transiciones de fase cuánticas en sistemas de dos nivelesEstudio de transiciones de fase cuánticas en sistemas de dos niveles
(2011-01-01)
El trabajo se estructura en 6 capítulos. El capítulo 1 posee fundamentalmente un carácter de introducción teórica a las ... |
Article
Phase diagram for a cubic-Q interacting boson model Hamiltonian: Signs of triaxialityPhase diagram for a cubic-Q interacting boson model Hamiltonian: Signs of triaxiality
(American Physical Society, 2011-01-01)
An extension of the Interacting Boson Model that includes the cubic (QI×QI×Q I)(0) term is proposed. The potential energy ... |
Article
Excited-state phase transition and onset of chaos in quantum optical modelsExcited-state phase transition and onset of chaos in quantum optical models
(American Physical Society, 2011-01-01)
We study the critical behavior of excited states and its relation to order and chaos in the Jaynes-Cummings and Dicke ... |
Article
Odd-even 147–153Pm isotopes within the neutron-proton interacting boson-fermion modelOdd-even 147–153Pm isotopes within the neutron-proton interacting boson-fermion model
(American Physical Society, 2011-01-01)
Low-lying energy states of the 147 -153Pm isotopic chain are studied within the framework of the neutron-proton interacting ... |
Article
Quantum quench influenced by an excited-state phase transitionQuantum quench influenced by an excited-state phase transition
(American Physical Society, 2011-01-01)
We analyze excited-state quantum phase transitions (ESQPTs) in three schematic (integrable and nonintegrable) models ... |
Article
Novel results from an algebraic approach to molecular bending dynamicsNovel results from an algebraic approach to molecular bending dynamics
(Institute of Physics Publishing, 2011-01-01)
We present a brief review of research topics of current interest that depend on an algebraic approach to molecular bending ... |
Article
Finite-size corrections in the bosonic algebraic approach to two-dimensional systemsFinite-size corrections in the bosonic algebraic approach to two-dimensional systems
(American Physical Society, 2011-01-01)
Analytical results beyond the mean-field-limit approximation for several observables of the two-dimensional limit of the ... |
Article
Relationship between X(5) models and the interacting boson modelRelationship between X(5) models and the interacting boson model
(The American Physical Society, 2010-01-01)
The connections between the X(5) models [the original X(5) using an infinite square well, X(5)-β8, X(5)-β6, X(5)-β4, and ... |
Article
Search for critical-point nuclei in terms of the sextic oscillatorSearch for critical-point nuclei in terms of the sextic oscillator
(The American Physical Society, 2010-01-01)
The spherical to deformed γ-unstable shape transition in nuclei is discussed in terms of the sextic oscillator as a ... |
Article
Shape phase transition in odd-even nuclei: From spherical to deformed γ -unstable shapesShape phase transition in odd-even nuclei: From spherical to deformed γ -unstable shapes
(The American Physical Society, 2010-01-01)
Shape phase transitions in odd-A nuclei are investigated within the framework of the interacting boson-fermion model. The ... |
Article
Exploring continuum structures with a pseudo-state basisExploring continuum structures with a pseudo-state basis
(The American Physical Society, 2010-01-01)
The ability of a recently developed square-integrable discrete basis to represent the properties of the continuum of a ... |
Article
UBF(5) to SUBF(3) shape phase transition in odd nuclei for j=1/2, 3/2, and 5/2 orbits: The role of the odd particle at the critical pointUBF(5) to SUBF(3) shape phase transition in odd nuclei for j=1/2, 3/2, and 5/2 orbits: The role of the odd particle at the critical point
(The American Physical Society, 2009-01-01)
We investigate the phase transition in odd nuclei within the Interacting Boson Fermion Model in correspondence with the ... |
Article
Coherent state approach to the interacting boson model: Test of its validity in the transitional regionCoherent state approach to the interacting boson model: Test of its validity in the transitional region
(The American Physical Society, 2009-01-01)
The predictive power of the coherent state (CS) approach to the interacting boson model (IBM) is tested far from the IBM ... |
Presentation
On the relation between E(5)- models and the interacting boson modelOn the relation between E(5)- models and the interacting boson model
(American Institute of Physics, 2009-01-01)
The connections between the Ε(5)-models (the original Ε(5) using an infinite square well, Ε(5) - β4 Ε(5) - β6 and Ε(5) - ... |
Article
Understanding 6He induced reactions at energies around the Coulomb barrierUnderstanding 6He induced reactions at energies around the Coulomb barrier
(American Institute of Physics, 2009-01-01)
Recent developments aimed to understand the observed features arising in the scattering of the Borromean nucleus 6He on ... |
Article
Decoherence due to an excited-state quantum phase transition in a two-level boson modelDecoherence due to an excited-state quantum phase transition in a two-level boson model
(American Physical Society, 2009-01-01)
The decoherence induced on a single qubit by its interaction with the environment is studied. The environment is modeled ... |
Article
Remarks on shape phase transitions in nucleiRemarks on shape phase transitions in nuclei
(Institute of Physics Publishing, 2009-01-01)
Various aspects of shape phase transitions in even as well as odd systems are reviewed. Firstly, the case of an odd j 3/2 ... |
Presentation
Decoherence as a Signature of an Excited State Quantum Phase Transition in Two Level Boson SystemsDecoherence as a Signature of an Excited State Quantum Phase Transition in Two Level Boson Systems
(American Institute of Physics, 2009-01-01)
We analyze the decoherence induced on a single qubit by the interaction with a two-level boson system with critical internal ... |
Article
Analytical transformed harmonic oscillator basis for continuum discretized coupled channels calculationsAnalytical transformed harmonic oscillator basis for continuum discretized coupled channels calculations
(The American Physical Society, 2009-01-01)
A new method for continuum discretization in continuum-discretized coupled-channels calculations is proposed. The method ... |
Article
Four-body continuum-discretized coupled-channels calculationsFour-body continuum-discretized coupled-channels calculations
(The American Physical Society, 2009-01-01)
The development of a continuum-bin scheme of discretization for three-body projectiles is necessary for studies of reactions ... |
Presentation
Four-body continuum-discretized coupled-channels calculations: Application to 6He+64Zn at 13.6 MeVFour-body continuum-discretized coupled-channels calculations: Application to 6He+64Zn at 13.6 MeV
(American Institute of Physics, 2009-01-01)
The recently developed four-body continuum-discretized coupled-channels (CDCC) method, making use of the binning procedure ... |
Presentation
Shape phase transitions and critical pointsShape phase transitions and critical points
(American Institute of Physics, 2009-01-01)
We investigate different aspects connected with shape phase transitions in nuclei and the possible occurrence of dynamical ... |
Presentation
Connection between decoherence and excited state quantum phase transitionsConnection between decoherence and excited state quantum phase transitions
(American Institute of Physics, 2009-01-01)
In this work we explore the relationship between an excited state quantum phase transition (ESQPT) and the phenomenon of ... |
Presentation
Shape phase transitions in odd-A nucleiShape phase transitions in odd-A nuclei
(American Institute of Physics, 2008-01-01)
We investigate shape phase transitions in odd nuclei within the Interacting Boson Fermion Model. Special attention is given ... |
Article
Population of mixed-symmetry states via α transfer reactionsPopulation of mixed-symmetry states via α transfer reactions
(The American Physical Society, 2008-01-01)
Within the neutron-proton interacting boson model we study the population of mixed-symmetry states via α transfer processes. ... |
Article
Relation between E(5) models and the interacting boson modelRelation between E(5) models and the interacting boson model
(The American Physical Society, 2008-01-01)
The connections between the E(5) models [the original E(5) using an infinite square well, E(5)-β4, E(5)-β6, and E(5)-β8], ... |
Article
Four-body continuum-discretized coupled-channels calculations using a transformed harmonic oscillator basisFour-body continuum-discretized coupled-channels calculations using a transformed harmonic oscillator basis
(The American Physical Society, 2008-01-01)
The scattering of a weakly bound three-body system by a target is discussed. A transformed harmonic oscillator basis is ... |
Article
Decoherence as a signature of an excited-state quantum phase transitionDecoherence as a signature of an excited-state quantum phase transition
(American Physical Society, 2008-01-01)
We analyze the decoherence induced on a single qubit by the interaction with a two-level boson system with critical internal ... |
Article
Critical-point symmetries in Boson-Fermion systems: The case of shape transitions in odd nuclei in a multiorbit modelCritical-point symmetries in Boson-Fermion systems: The case of shape transitions in odd nuclei in a multiorbit model
(American Physical Review, 2007-02-05)
We investigate phase transitions in boson-fermion systems. We propose an analytically solvable model [E(5/12)] to describe ... |
Article
Two-level interacting boson models beyond the mean fieldTwo-level interacting boson models beyond the mean field
(American Physical Society, 2007-01-26)
The phase diagram of two-level boson Hamiltonians, including the interacting boson model (IBM), is studied beyond the ... |
Article
Shape-phase transitions and two-particle transfer intensitiesShape-phase transitions and two-particle transfer intensities
(The American Physical Society, 2007-01-01)
In the light of renewed interest in experiments on two-particle transfer reactions, we study the evolution of the transfer ... |
Article
Shape phase transition in odd nuclei in a multi- j model: The UB(6) ⊗ UF(12) caseShape phase transition in odd nuclei in a multi- j model: The UB(6) ⊗ UF(12) case
(The American Physical Society, 2007-01-01)
The phase transition in odd nuclei when the underlying even-even core nuclei experience a transition from spherical to ... |
Article
Improved di-neutron cluster model for 6 He scatteringImproved di-neutron cluster model for 6 He scattering
(American Physical Society, 2007-01-01)
The structure of the three-body Borromean nucleus He6 is approximated by a two-body di-neutron cluster model. The binding ... |
Article
One-particle spectroscopic intensities as a signature of shape phase transition: The γ -unstable caseOne-particle spectroscopic intensities as a signature of shape phase transition: The γ -unstable case
(American Physical Society, 2006-08-09)
We investigate the evolution of one-particle spectroscopic intensities as a possible signature of shape phase transitions. ... |
Article
Coulomb breakup in a transformed harmonic oscillator basisCoulomb breakup in a transformed harmonic oscillator basis
(American Physical Society, 2006-05-10)
The problem of Coulomb breakup in the scattering of a two-body loosely bound projectile by a heavy target is addressed. A ... |
Presentation
Probing 6He structure from proton inelastic collisionsProbing 6He structure from proton inelastic collisions
(American Institute of Physics, 2006-01-01)
We explore the Hyperspherical Harmonics pseudostate method to describe the 6He continuum. The method is use it within the multiple scattering of the transition amplitude (MST) approach to study inelastic scattering of p-6He at 700 MeV/u. |
Article
Scalar two-level boson model to study the interacting boson model phase diagram in the Casten triangleScalar two-level boson model to study the interacting boson model phase diagram in the Casten triangle
(American Physical Society, 2006-01-01)
We introduce a simple two-level boson model with the same energy surface as the Q-consistent interacting boson model ... |
Article
Continuous unitary transformations in two-level boson systemsContinuous unitary transformations in two-level boson systems
(American Physical Society, 2005-12-01)
Two-level boson systems displaying a quantum phase transition from a spherical (symmetric) to a deformed (broken) phase ... |
Article
Finite-size scaling exponents in the interacting boson modelFinite-size scaling exponents in the interacting boson model
(American Physical Society, 2005-07-01)
We investigate the finite-size scaling exponents for the critical point at the shape-phase transition from U(5) (spherical) ... |
Article
Phase transitions in the interacting boson fermion model: The γ -unstable casePhase transitions in the interacting boson fermion model: The γ -unstable case
(American Physical Society, 2005-01-11)
The phase transition around the critical point in the evolution from spherical to deformed γ-unstable shapes is investigated ... |
Article
β4 potential at the U(5)–O(6) critical point of the interacting boson modelβ4 potential at the U(5)–O(6) critical point of the interacting boson model
(American Physical Society, 2005-01-01)
Exact numerical results of the interacting boson model Hamiltonian along the integrable line from U(5) to O(6) are obtained ... |
Article
One nucleon transfer operator and nuclear supersymmetryOne nucleon transfer operator and nuclear supersymmetry
(American Physical Society, 2005-01-01)
The appropriate use of the interacting boson-fermion model one nucleon transfer operator in connection with ... |
| PhD Thesis |
Article
Three-body continuum discretization in a basis of transformed harmonic oscillator statesThree-body continuum discretization in a basis of transformed harmonic oscillator states
(American Physical Society, 2005-01-01)
The inclusion of the continuum in the study of weakly bound three-body systems is discussed. A transformed harmonic ... |
Article
Phase diagram of the proton-neutron interacting boson modelPhase diagram of the proton-neutron interacting boson model
(American Physical Society, 2004-11-19)
We study the phase diagram of the proton-neutron interacting boson model with special emphasis on the phase transitions leading to triaxial phases. The existence of a new critical point between spherical and triaxial shapes is reported. |
Article
Describing resonances in a discrete basisDescribing resonances in a discrete basis
(American Physical Society, 2004-03-01)
The problem of describing resonances when the continuum is represented by a discrete set of normalizable states is addressed. ... |
Article
The sextic oscillator as a γ-independent potentialThe sextic oscillator as a γ-independent potential
(American Physical Society, 2004-01-01)
The sextic oscillator is proposed as a two-parameter solvable g-independent potential in the Bohr Hamiltonian. It is shown ... |
Article
Quantum phase transitions in the interacting boson model: Integrability, level repulsion, and level crossingQuantum phase transitions in the interacting boson model: Integrability, level repulsion, and level crossing
(American Physical Review, 2003-10-17)
We study the quantum phase transition mechanisms that arise in the interacting boson model. We show that the second-order ... |
Article
U(5)-O(6) transition in the interacting boson model and the E(5) critical point symmetryU(5)-O(6) transition in the interacting boson model and the E(5) critical point symmetry
(American Physical Society, 2003-10-01)
The relation of the recently proposed E(5) critical point symmetry with the interacting boson model is ... |
Article
Phase transitions and critical points in the rare-earth regionPhase transitions and critical points in the rare-earth region
(American Physical Society, 2003-08-01)
A systematic study of isotope chains in the rare-earth region is presented. For chains 60 144 2 154Nd, 62 146 2 160Sm, 64 ... |
Article
Continuum discretization using orthogonal polynomialsContinuum discretization using orthogonal polynomials
(American Physical Society, 2003-01-01)
A method for discretizing the continuum by using a transformed harmonic oscillator basis has recently been presented [Phys. ... |
PhD Thesis
Desarrollos microscópicos y cálculos en el marco del modelo de bosones y fermiones en interacciónDesarrollos microscópicos y cálculos en el marco del modelo de bosones y fermiones en interacción
(2002-12-10)
La presente Tesis Doctoral se desarrolla en el marco de los modelos de bosones en interacción (IBM) y de bosones y fermiones ... |
Article
Anharmonic double-phonon excitations in the interacting boson modelAnharmonic double-phonon excitations in the interacting boson model
(American Physical Society, 2002-12-01)
Double−γ vibrations in deformed nuclei are analyzed in the context of the interacting boson model. A simple extension of ... |
Article
Boson-conserving one-nucleon transfer operator in the interacting boson modelBoson-conserving one-nucleon transfer operator in the interacting boson model
(American Physical Society, 2002-03-01)
The boson-conserving one-nucleon transfer operator in the interacting boson model (IBM) is reanalyzed. Extra ... |
Article
Search for E(5) symmetry in nuclei: The Ru isotopesSearch for E(5) symmetry in nuclei: The Ru isotopes
(American Physical Society, 2002-01-01)
We carry out an interacting boson model study of the Ru isotopes using a U(5)-SO(6) transitional Hamiltonian with fixed ... |
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Article
Coupling to breakup channels using a transformed harmonic oscillator basisCoupling to breakup channels using a transformed harmonic oscillator basis
(American Physical Society, 2002-01-01)
The application of a recently proposed procedure for discretizing the continuum to collision processes involving ... |
Article
Continuum coupling in one-dimensional scattering using a transformed harmonic oscillator basisContinuum coupling in one-dimensional scattering using a transformed harmonic oscillator basis
(American Physical Society, 2002-01-01)
The continuum coupling in a one-dimensional scattering problem was studied within a semiclassical approach by means of a ... |
PhD Thesis
Métodos analíticos para el tratamiento de potenciales anarmónicos en física molecularMétodos analíticos para el tratamiento de potenciales anarmónicos en física molecular
(2001-02-16)
El propósito de esta tesis es utilizar dos métodos analíticos para la descripción vibracional de moléculas, que incluyen ... |
Article
E2 transitions and quadrupole moments in the E(5) symmetryE2 transitions and quadrupole moments in the E(5) symmetry
(American Physical Society, 2001-01-01)
E2 transitions and quadrupole moments are studied in the recently proposed E~5! symmetry by using the intrinsic state ... |
Article
Continuum discretization in a basis of transformed harmonic-oscillator statesContinuum discretization in a basis of transformed harmonic-oscillator states
(American Physical Society, 2001-01-01)
The method of defining a transformed harmonic-oscillator (THO) basis, designed to take an account of continuum, by an ... |
Article
Anharmonic double-γ vibrations in nuclei and their description in the interacting boson modelAnharmonic double-γ vibrations in nuclei and their description in the interacting boson model
(American Physical Society, 2000-04-01)
Double-γ vibrations in deformed nuclei are studied in the context of the interacting boson model with special reference ... |
Article
Intrinsic state for an extended version of the interacting boson modelIntrinsic state for an extended version of the interacting boson model
(American Physical Society, 2000-03-01)
An intrinsic-state formalism for the interacting boson model IBM-4 is presented. A basis of deformed bosons is introduced ... |
Article
Coupling of Dipole Mode to γ -unstable Quadrupole OscillationsCoupling of Dipole Mode to γ -unstable Quadrupole Oscillations
(Elsevier, 2000-01-01)
The coupling of the high-lying dipole mode to the low-lying quadrupole modes for the case of deformed γ-unstable nuclei ... |
Article
Configuration localized wave functions: General formalism and applications to vibrational spectroscopy of diatomic moleculesConfiguration localized wave functions: General formalism and applications to vibrational spectroscopy of diatomic molecules
(American Physical Society, 2000-01-01)
A general formalism for constructing configuration localized states for one-dimensional potentials is presented. It allows ... |
PhD Thesis
Análisis, construcción y verificación experimental de un sistema de radiofrecuencia para la detección no destructiva de fluctuaciones de fase en haces iónicos pulsados emergentes de un acelerador electrostáticoAnálisis, construcción y verificación experimental de un sistema de radiofrecuencia para la detección no destructiva de fluctuaciones de fase en haces iónicos pulsados emergentes de un acelerador electrostático
(1999-05-01)
Esta tesis doctoral abarca el análisis previo, los fundamentos de proyecto, los procedimientos para la construcción y la ... |
Article
Analytic evaluation of Franck-Condon integrals for anharmonic vibrational wave functionsAnalytic evaluation of Franck-Condon integrals for anharmonic vibrational wave functions
(American Physical Society, 1999-01-01)
The problem of calculating Franck-Condon overlap integrals in molecular transitions between vibrational states in different ... |
Article
Comment on “Pairing interaction and Galilei invariance”Comment on “Pairing interaction and Galilei invariance”
(American Physical Society, 1999-01-01)
A recent article by Dussel, Sofia, and Tonina studies the relation between Galilei invariance and dipole energy weighted ... |
| PhD Thesis |
Article
Configuration localized Morse wave functions: Application to vibrational transitions in anharmonic diatomic moleculesConfiguration localized Morse wave functions: Application to vibrational transitions in anharmonic diatomic molecules
(American Physical Society, 1999-01-01)
The bound states of a Morse potential are described in terms of a basis of states that are characterized for being eigenstates ... |
Article
Hartree-Bose mean-field approximation for the interacting boson model (IBM-3)Hartree-Bose mean-field approximation for the interacting boson model (IBM-3)
(American Physical Society, 1998-02-01)
A Hartree-Bose mean-field approximation for the IBM-3 is presented. A Hartree-Bose transformation from spherical to deformed ... |
Article
A Hartree-Bose mean-field approximation for IBM-3A Hartree-Bose mean-field approximation for IBM-3
(Springer Nature, 1998-01-01)
A Hartree-Bose mean-field approximation for the IBM-3 is presented. A Hartree-Bose transformation from the spherical to ... |
Article
Scattering of low-energy electrons by polar molecules: An analytic approachScattering of low-energy electrons by polar molecules: An analytic approach
(American Physical Society, 1998-01-01)
The scattering of low-energy electrons by polar molecules is considered. The excitation to the rotational states in the ... |
PhD Thesis
Métodos algebraicos en física molecular: el modelo de osciladores anarmónicos simetrizados (AOSM) para el estudio de la estructura vibracional y una aproximación analítica a la dispersión de electrones por moléculas polares.Métodos algebraicos en física molecular: el modelo de osciladores anarmónicos simetrizados (AOSM) para el estudio de la estructura vibracional y una aproximación analítica a la dispersión de electrones por moléculas polares.
(1998-01-01)
En esta Tesis se presentan los resultados del trabajo realizado durante cuatro años en el Instituto de Ciencias Nucleares ... |
Article
A symmetry adapted approach to vibrational excitations in atomic clustersA symmetry adapted approach to vibrational excitations in atomic clusters
(Springer Nature, 1998-01-01)
An algebraic method especially suited to describe the strongly anharmonic vibrational spectra in molecules may be an ... |
Article
Intrinsic structure of two-phonon states in the interacting boson modelIntrinsic structure of two-phonon states in the interacting boson model
(Elsevier, 1998-01-01)
A general study of excitations up to two-phonon states is carried out using the intrinsicstate formalism of the Interacting ... |
Article
Comment on “Boson-realization model for the vibrational spectra of tetrahedral molecules”Comment on “Boson-realization model for the vibrational spectra of tetrahedral molecules”
(American Physical Society, 1997-01-01)
An algebraic model in terms of a local harmonic boson realization was recently proposed to study molecular vibrational ... |
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Article
On the relation between algebraic and configuration space calculations of molecular vibrationsOn the relation between algebraic and configuration space calculations of molecular vibrations
(Elsevier, 1996-03-01)
The relation between algebraic and traditional calculations of molecular vibrations is investigated. An explicit connection between interactions in configuration space and the corresponding algebraic interactions is established. |
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Article
A general algebraic model for molecular vibrational spectroscopyA general algebraic model for molecular vibrational spectroscopy
(Elsevier, 1996-01-01)
We introduce the anharmonic oscillator symmetry model to describe vibrational excitations in molecular systems exhibiting ... |
Article
A Symmetry-Adapted Algebraic Approach to Molecular SpectroscopyA Symmetry-Adapted Algebraic Approach to Molecular Spectroscopy
(Scielo, 1996-01-01)
We apply a symmetry-adapted algebraic model to the vibrational excitations in D_3h and T_d molecules. A systematic procedure ... |
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Article
Analytic description of the scattering of electrons by moleculesAnalytic description of the scattering of electrons by molecules
(American Physical Society, 1995-01-01)
The scattering of electrons by molecules is considered. The structure of the molecule is described in terms of the vibron ... |
Article
Consistent baryon mapping of quark systemsConsistent baryon mapping of quark systems
(American Physical Society, 1994-01-01)
We present a new and consistent mapping of colorless three-quark clusters onto colorless triplet fermions (baryons) and ... |
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Article
First observation of scissors mode states in an odd-mass nucleusFirst observation of scissors mode states in an odd-mass nucleus
(American Physical Society, 1993-01-01)
Nuclear resonance fluorescence experiments are reported to search for enhanced M1 scissors mode states in the deformed ... |
Article
Backbending of Dy isotopes described with the neutron-photon IBA plus two-quasiparticle modelBackbending of Dy isotopes described with the neutron-photon IBA plus two-quasiparticle model
(Elsevier, 1986-01-01)
The formalism of the neutron-photon interacting boson model, extended to include two-quasiparticle excitations, is used ... |
Article
Test of the proton-neutron interacting boson-fermion model in the region around A=190Test of the proton-neutron interacting boson-fermion model in the region around A=190
(American Physical Society, 1986-01-01)
We present systematic calculations on nuclei in the region around A=190 within the framework of the proton-neutron interacting ... |
| PhD Thesis |
Article
Nuclear structure information obtained from charge radiiNuclear structure information obtained from charge radii
(Elsevier, 1985-01-01)
We analyze the nuclear structure information obtained from measurements of charge radii in even-even and even-odd nuclei ... |
Article
A calculation of low-lying collective states in odd-even nucleiA calculation of low-lying collective states in odd-even nuclei
(Elsevier, 1984-01-01)
We present results of a calculation of properties of low-lying collective quadrupole states in odd-even nuclei within the framework of the proton-neutron interacting boson-fermion model. |
Article
Prealignment B(E2)-anomaly in 124XePrealignment B(E2)-anomaly in 124Xe
(Elsevier, 1983-01-01)
Lifetimes of 17 levels of 124Xe were measured using the Recoil Distance Doppler Shift method. An anomalous E2-reduction ... |