RT Journal Article
T1 Quantum quench influenced by an excited-state phase transition
A1 Pérez Fernández, Pedro
A1 Cejnar, P.
A1 Arias Carrasco, José Miguel
A1 Dukelsky, J.
A1 García Ramos, José Enrique
A1 Relaño Pérez, Armando
AB We analyze excited-state quantum phase transitions (ESQPTs) in three schematic (integrable andnonintegrable) models describing a single-mode bosonic field coupled to a collection of atoms. It isshown that the presence of the ESQPT in these models affects the quantum relaxation processesfollowing an abrupt quench in the control parameter. Clear cut evidence of the ESQPT effects ispresented in integrable models, while in the nonintegrable model the evidence is blurred due tochaotic behavior of the system in the region around the critical energy.
PB American Physical Society
SN 1050-2947
YR 2011
FD 2011-03-03
LK http://hdl.handle.net/10272/5531
UL http://hdl.handle.net/10272/5531
LA eng
NO 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
NO P.C. acknowledges useful discussions with M. Kastner and J. Hirsch. This work has been partially supported by the Czech Science Foundation (Grant No. 202/09/0084), by the Czech Ministry of Education (Grant No. MSM 0021620859), by the Spanish Ministerio de Educacion y Ciencia and the European regional development fund FEDER (Grants No. FIS2009-07277, No. FIS2008-04189, No. FIS2006-12783-C03-01, No. FPA2006-13807-C02-02, No. FPA2007-63074, and No. FIS2009-11621-C02-01), by CPAN-Ingenio (Grant No. CSPD-2007-00042-Ingenio), by Junta de Andalucia (Grants No. FQM160, No. FQM318, No. P05-FQM437, and No. P07-FQM-02962), and by the Universidad Complutense de Madrid (Grant No. UCM-910059). P.P-F. is supported by a FPU grant of the Spanish Ministerio de Educacion y Ciencia. A.R. is supported by the Spanish program CPAN Consolider-ingenio.
DS Repositorio Institucional de la Universidad de Huelva
RD 1 jun 2026