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Listar por autor "Pérez Fernández, Pedro"
Mostrando ítems 1-20 de 32
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Ponencia
A beyond mean field study of Bose gases in a double-well potential with a Feshbach resonance
Pérez Fernández, Pedro; Relaño, Armando; Dukelsky, Jorge; Arias Carrasco, José Miguel (American Institute of Physics, 2012)The Bose-Hubbard model coupled to a Feshbach resonance is studied. Quantum phase transitions are analyzed within a beyond ...
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Ponencia
A beyond mean-field study of the Tavis- Cummings model
Tejera-Centeno, C.; Pérez Fernández, Pedro; Arias Carrasco, José Miguel (American Institute of Physics, 2019-09)A beyond mean-field study of the Tavis-Cummings (TC) model is developed. This is the simplest model for describing the ...
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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
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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Trabajo Fin de Máster
Análisis de un quantum quench en el modelo de Lipkin anharmónico
Gamito Gómez, Juan (2019-12) -
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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Capítulo de Libro
Contractions of certain Lie algebras
Escobar Rica, José María; Núñez Valdés, Juan; Pérez Fernández, Pedro (Godel, 2015)This communication is focused on the study of contractions of certain types of Lie algebras of low dimension, in order to ...
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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
Digital-analog quantum computation with arbitrary two-body Hamiltonians
García de Andoin, Mikel; Saiz Castillo, Álvaro; Pérez Fernández, Pedro; Lamata Manuel, Lucas; Oregi, Izaskun; Sanz, Mikel (American Physical Society, 2024-03-14)Digital-analog quantum computing is a computational paradigm which employs an analog Hamiltonian resource together with ...
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Artículo
Entropies and IPR as Markers for a Phase Transition in a Two-Level Model for Atom–Diatomic Molecule Coexistence
Baena, Ignacio; Pérez Fernández, Pedro; Rodríguez Gallardo, Manuela; Arias Carrasco, José Miguel (Multidisciplinary Digital Publishing Institute (MDPI), 2022)A quantum phase transition (QPT) in a simple model that describes the coexistence of atoms and diatomic molecules is ...
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Trabajo Fin de Grado
Estudio de transiciones de fase cuánticas en el modelo de Rabi
Román Lemos, Eduardo (2019-06)El objetivo de este trabajo es realizar un estudio sobre las transiciones de fase cuánticas que se presentan en el modelo ...
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Tesis Doctoral
Estudio de transiciones de fase cuánticas en sistemas de dos niveles
Pérez Fernández, Pedro (2011)El trabajo se estructura en 6 capítulos. El capítulo 1 posee fundamentalmente un carácter de introducción teórica a las ...
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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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Artículo
Excited-state Quantum Phase Transitions in the Anharmonic Lipkin-Meshkov-Glick Model: Dynamical Aspects
Khalouf Rivera, Yamil; Gamito, J.; Pérez Bernal, Francisco; Arias Carrasco, José Miguel; Pérez Fernández, Pedro (American Physical Society, 2023)The standard Lipkin-Meshkov-Glick (LMG) model undergoes a second-order ground-state quantum phase transition (QPT) and an ...