Browsing by Author "Dukelsky, Jorge"
Now showing items 1-20 of 27
-
Presentation
A beyond mean field study of Bose gases in a double-well potential with a Feshbach resonance
(American Institute of Physics, 2012)The Bose-Hubbard model coupled to a Feshbach resonance is studied. Quantum phase transitions are analyzed within a beyond ...
-
Article
A Hartree-Bose mean-field approximation for IBM-3
(Springer Nature, 1998)A Hartree-Bose mean-field approximation for the IBM-3 is presented. A Hartree-Bose transformation from the spherical to ...
-
Article
An extended Agassi model: Algebraic structure, phase diagram, and large size limit
(Institute of Physics Publishing, 2019)The Agassi model (Agassi 1968 Nucl. Phys. A 116 49) is a schematic two-level model that involves pairing and monopole-monopole ...
-
Presentation
Connection between decoherence and excited state quantum phase transitions
(American Institute of Physics, 2009)In this work we explore the relationship between an excited state quantum phase transition (ESQPT) and the phenomenon of ...
-
Article
Consistent baryon mapping of quark systems
(American Physical Society, 1994)We present a new and consistent mapping of colorless three-quark clusters onto colorless triplet fermions (baryons) and ...
-
Article
Continuous 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 ...
-
Presentation
Decoherence and quantum quench: Their relationship with excited state quantum phase transitions
(American Institute of Physics, 2012)We study the similarities and differences between the phenomena of Quantum Decoherence and Quantum Quench in presence of ...
-
Presentation
Decoherence as a Signature of an Excited State Quantum Phase Transition in Two Level Boson Systems
(American Institute of Physics, 2009)We analyze the decoherence induced on a single qubit by the interaction with a two-level boson system with critical internal ...
-
Article
Decoherence as a signature of an excited-state quantum phase transition
(American Physical Society, 2008)We analyze the decoherence induced on a single qubit by the interaction with a two-level boson system with critical internal ...
-
Article
Decoherence due to an excited-state quantum phase transition in a two-level boson model
(American Physical Society, 2009)The decoherence induced on a single qubit by its interaction with the environment is studied. The environment is modeled ...
-
Article
Disentangling phase transitions and critical points in the proton-neutron interacting boson model by catastrophe theory
(Elsevier, 2014)We introduce the basic concepts of catastrophe theory needed to derive analytically the phase diagram of the proton–neutron ...
-
PhD Thesis
Estudio de transiciones de fase cuánticas en sistemas de dos niveles
(2011)El trabajo se estructura en 6 capítulos. El capítulo 1 posee fundamentalmente un carácter de introducción teórica a las ...
-
Presentation
Excited state quantum phase transitions and chaos in the Dicke model
(American Institute of Physics, 2012)In this contribution, the critical behavior of excited state quantum phase transitions (ESQPT's) and its relation to order ...
-
Article
Excited-state phase transition and onset of chaos in quantum optical models
(American Physical Society, 2011)We study the critical behavior of excited states and its relation to order and chaos in the Jaynes-Cummings and Dicke ...
-
Article
Finite-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
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
Intrinsic 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
Number conserving particle-hole RPA for superfluid nuclei
(Elsevier, 2019-08)We present a number conserving particle-hole RPA theory for collective excitations in the transition from normal to ...
- Article
-
Article
Phase diagram of an extended Agassi model
(American Physical Society, 2018)Background: The Agassi model [D. Agassi, Nucl. Phys. A 116, 49 (1968)NUPABL0375-947410.1016/0375-9474(68)90482-X] is an ...