Ponencia
Decoherence and quantum quench: Their relationship with excited state quantum phase transitions
Autor/es | García Ramos, José Enrique
Arias Carrasco, José Miguel Cejnar, Pavel Dukelsky, Jorge Pérez Fernández, Pedro Relaño, Armando |
Departamento | Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear Universidad de Sevilla. Departamento de Física Aplicada III |
Fecha de publicación | 2012 |
Fecha de depósito | 2019-03-21 |
Publicado en |
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ISBN/ISSN | 978-073541100-5 0094-243X 1551-7616 |
Resumen | We study the similarities and differences between the phenomena of Quantum Decoherence and Quantum Quench in presence of an Excited State Quantum Phase Transition (ESQPT). We analyze, on one hand, the decoherence induced ... We study the similarities and differences between the phenomena of Quantum Decoherence and Quantum Quench in presence of an Excited State Quantum Phase Transition (ESQPT). We analyze, on one hand, the decoherence induced on a single qubit by the interaction with a two-level boson system with critical internal dynamics and, on the other, we treat the quantum relaxation process that follows an abrupt quench in the control parameter of the system Hamiltonian. We explore how the Quantum Decoherence and the quantum relaxation process are affected by the presence of an ESQPT. We conclude that the dynamics of the qubit or the quantum relaxation process change dramatically when the system passes through a continuous ESQPT. |
Identificador del proyecto | FIS2011-28738-C02-01/02
FIS2009-07277 CSD2007-00042 FQM160 FQM318 P07-FQM-02962 P07-FQM-02962 |
Cita | García Ramos, J.E., Arias Carrasco, J.M., Cejnar, P., Dukelsky, J., Pérez Fernández, P. y Relaño, A. (2012). Decoherence and quantum quench: Their relationship with excited state quantum phase transitions. En Beauty in Physics: Theory and Experiment - In Honor of Francesco Iachello on the Occasion of His 70th Birthday (309-317), Hacienda Cocoyoc; Mexico: American Institute of Physics. |
Ficheros | Tamaño | Formato | Ver | Descripción |
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Decoherence and quantum quench.pdf | 784.8Kb | [PDF] | Ver/ | |
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