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Listar por autor "García Ramos, José Enrique"
Mostrando ítems 1-20 de 39
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Artículo
A digital quantum simulation of the Agassi model
Pérez Fernández, Pedro; Arias Carrasco, José Miguel; García Ramos, José Enrique; Lamata Manuel, Lucas (Elsevier, 2022)A digital quantum simulation of the Agassi model from nuclear physics is proposed and analyzed. The proposal is worked out ...
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Artículo
A Hartree-Bose mean-field approximation for IBM-3
García Ramos, José Enrique; Arias Carrasco, José Miguel; Dukelsky, Jorge; Moya de Guerra, E.; Isacker, Piet van (Springer Nature, 1998)A Hartree-Bose mean-field approximation for the IBM-3 is presented. A Hartree-Bose transformation from the spherical to ...
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Artículo
An extended Agassi model: Algebraic structure, phase diagram, and large size limit
García Ramos, José Enrique; Dukelsky, Jorge; Pérez Fernández, Pedro; Arias Carrasco, José Miguel (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 ...
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Artículo
Anharmonic double-phonon excitations in the interacting boson model
García Ramos, José Enrique; Arias Carrasco, José Miguel; Isacker, Piet van (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 ...
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Artículo
Anharmonic double-γ vibrations in nuclei and their description in the interacting boson model
García Ramos, José Enrique; Alonso Alonso, Clara Eugenia; Arias Carrasco, José Miguel; Isacker, Piet van (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 ...
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Ponencia
Connection between decoherence and excited state quantum phase transitions
Pérez Fernández, Pedro; Relaño, Armando; Arias Carrasco, José Miguel; Dukelsky, Jorge; García Ramos, José Enrique (American Institute of Physics, 2009)In this work we explore the relationship between an excited state quantum phase transition (ESQPT) and the phenomenon of ...
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Artículo
Continuous unitary transformations in two-level boson systems
Dusuel, Sébastien; Vidal, Julien; Arias Carrasco, José Miguel; Dukelsky, Jorge; García Ramos, José Enrique (American Physical Society, 2005-12-01)Two-level boson systems displaying a quantum phase transition from a spherical (symmetric) to a deformed (broken) phase ...
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Ponencia
Decoherence and quantum quench: Their relationship with excited state quantum phase transitions
García Ramos, José Enrique; Arias Carrasco, José Miguel; Cejnar, Pavel; Dukelsky, Jorge; Pérez Fernández, Pedro; Relaño, Armando (American Institute of Physics, 2012)We study the similarities and differences between the phenomena of Quantum Decoherence and Quantum Quench in presence of ...
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Ponencia
Decoherence as a Signature of an Excited State Quantum Phase Transition in Two Level Boson Systems
García Ramos, José Enrique; Arias Carrasco, José Miguel; Dukelsky, Jorge; Pérez Fernández, Pedro; Relaño, Armando (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 ...
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Artículo
Decoherence as a signature of an excited-state quantum phase transition
Relaño, Armando; Arias Carrasco, José Miguel; Dukelsky, Jorge; García Ramos, José Enrique; Pérez Fernández, Pedro (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 ...
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Artículo
Decoherence due to an excited-state quantum phase transition in a two-level boson model
Pérez Fernández, Pedro; Relaño, Armando; Arias Carrasco, José Miguel; Dukelsky, Jorge; García Ramos, José Enrique (American Physical Society, 2009)The decoherence induced on a single qubit by its interaction with the environment is studied. The environment is modeled ...
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Artículo
Digital quantum simulation of an extended Agassi model: Using machine learning to disentangle its phase-diagram
Sáiz, Álvaro; García Ramos, José Enrique; Arias Carrasco, José Miguel; Lamata Manuel, Lucas; Pérez Fernández, Pedro (American Physical Society, 2022)A digital quantum simulation for the extended Agassi model is proposed using a quantum platform with eight trapped ions. ...
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Artículo
Disentangling phase transitions and critical points in the proton-neutron interacting boson model by catastrophe theory
García Ramos, José Enrique; Arias Carrasco, José Miguel; Dukelsky, Jorge (Elsevier, 2014)We introduce the basic concepts of catastrophe theory needed to derive analytically the phase diagram of the proton–neutron ...
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Ponencia
Excited state quantum phase transitions and chaos in the Dicke model
Pérez Fernández, Pedro; Relaño, Armando; Cejnar, Pavel; Arias Carrasco, José Miguel; Dukelsky, Jorge; García Ramos, José Enrique (American Institute of Physics, 2012)In this contribution, the critical behavior of excited state quantum phase transitions (ESQPT's) and its relation to order ...
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Artículo
Excited-state phase transition and onset of chaos in quantum optical models
Pérez Fernández, Pedro; Relaño, Armando; Arias Carrasco, José Miguel; Cejnar, P.; Dukelsky, Jorge; García Ramos, José Enrique (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 ...
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Artículo
Excited-state quantum phase transitions in a two-fluid Lipkin model
García Ramos, José Enrique; Pérez Fernández, Pedro; Arias Carrasco, José Miguel (American Physical Society, 2017-05-30)Background: Composed systems have become of great interest in the framework of ground-state quantum phase transitions ...
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Tesis Doctoral
Extensiones del modelo de bosones en interacción para su aplicación a problemas actuales de estructura nuclear
García Ramos, José Enrique (1999) -
Artículo
Finite-size corrections in the bosonic algebraic approach to two-dimensional systems
Pérez Fernández, Pedro; Arias Carrasco, José Miguel; García Ramos, José Enrique; Pérez Bernal, Francisco (American Physical Society, 2011)Analytical results beyond the mean-field-limit approximation for several observables of the two-dimensional limit of the ...
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Artículo
Finite-size scaling exponents in the interacting boson model
Dusuel, Sébastien; Vidal, Julien; Arias Carrasco, José Miguel; Dukelsky, Jorge; García Ramos, José Enrique (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) ...
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Artículo
Hartree-Bose mean-field approximation for the interacting boson model (IBM-3)
García Ramos, José Enrique; Arias Carrasco, José Miguel; Dukelsky, Jorge; Moya de Guerra, E.; Isacker, Piet van (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 ...