Quantum quench influenced by an excited-state phase transition
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Author
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Publication Date
2011-03-03 -
Publisher
American Physical Society -
Citation
Pérez Fernández, P., Cejnar, P., Arias Carrasco, J.M., Dukelsky, J., García Ramos, J.E.: "Quantum quench influenced by an excited-state phase transition". Physical Review A. Vol. 83, n. 3, (2011). DOI: 10.1103/PhysRevA.83.033802 -
Abstract
We analyze excited-state quantum phase transitions (ESQPTs) in three schematic (integrable and nonintegrable) models describing a single-mode bosonic field coupled to a collection of atoms. It is shown that the presence of the ESQPT in these models affects the quantum relaxation processes following an abrupt quench in the control parameter. Clear cut evidence of the ESQPT effects is presented in integrable models, while in the nonintegrable model the evidence is blurred due to chaotic behavior of the system in the region around the critical energy. -
Project
Czech Science Foundation [202/09/0084]
Czech Ministry of Education [MSM 0021620859]
FEDER [FIS2009-07277, FIS2008-04189, FIS2006-12783-C03-01, FPA2006-13807-C02-02, FPA2007-63074, FIS2009-11621-C02-01]
CPAN-Ingenio [CSPD-2007-00042-Ingenio]
Junta de Andalucia [FQM160 FQM318 P05-FQM437 P07-FQM-02962]
Universidad Complutense de Madrid [UCM-910059]
Fichero | Tamaño | Formato |
| Description |
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Quantum_quench_influenced.pdf | 812.9Kb | View/ | versión pre-print |
Fichero | Tamaño | Formato |
| Description |
---|---|---|---|---|
Quantum_quench_influenced.pdf | 812.9Kb | View/ | versión pre-print |