RT Conference Proceedings
T1 Excited state quantum phase transitions and chaos in the Dicke model
A1 Pérez Fernández, Pedro
A1 Relaño Pérez, Armando
A1 Cejnar, P.
A1 Arias Carrasco, José Miguel
A1 Dukelsky, J.
A1 García Ramos, José Enrique
AB In this contribution, the critical behavior of excited state quantum phase transitions(ESQPT’s) and its relation to order and chaos in the Dicke model are studied. This model is nonintegrable.For comparison, the same problem is studied for the Jaynes-Cummings model which is,somehow, the integrable version of the Dicke model. The existence of an ESQPT is confirmed inboth cases. However, in the Dicke model the signatures of criticality in excited states are blurred bythe onset of quantum chaos. It is concluded that the emergence of quantum chaos is caused by theprecursors of the excited state quantum phase transition.
PB American Institute of Physics
SN 0094-243X
SN 1551-7616 (electrónico)
YR 2012
FD 2012
LK http://hdl.handle.net/10272/6375
UL http://hdl.handle.net/10272/6375
LA eng
NO Pérez Fernández, P., Relaño Pérez, A., Cejnar, P., Arias Carrasco, J.M., Dukelsky, J., García Ramos, J.E.: "Excited state quantum phase transitions and chaos in the Dicke model". AIP Conference Proceedings. Vol. 1488, 318 (2012)
NO Comunicación presentada a: Meeting on Beauty in Physics - Theory and Experiment in Honor of Francesco Lachello on the Occasion of his 70th Birthday Location: México, may 14-18, 2012
DS Repositorio Institucional de la Universidad de Huelva
RD 1 jun 2026