RT Book, Section
T1 Excited state quantum phase transitions and chaos in the Dicke model
A1 Pérez Fernández, P.
A1 Relaño Pérez, Armando
A1 Cejnar, P.
A1 Arias, J. M.
A1 Dukelsky, J.
A1 García Ramos, J. E.
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 non-integrable. 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 in both cases. However, in the Dicke model the signatures of criticality in excited states are blurred by the onset of quantum chaos. It is concluded that the order-to-chaos transition just below the critical energy gives us a chance to study the impact of chaotic dynamics on the signatures of ESQPTs.
PB American Institute of Physics (AIP)
SN 978-0-7354-1100-5
YR 2012
FD 2012
LK https://hdl.handle.net/20.500.14352/45629
UL https://hdl.handle.net/20.500.14352/45629
LA eng
NO © American Institute of Physics (AIP).Meeting on Beauty in Physics - Theory and Experiment in Honor of Francesco Lachello on the Occasion of his 70th Birthday (2012. Hacienda Cocoyoc, Mexico).This work is presented on the occasion of Franco Iachello’s 70th birthday. This work hasbeen partially supported by the Spanish Ministerio de Ciencia e Innovación and FEDERfunds under projects FIS2011-28738-c02-01. Spanish Consolider Ingenio ProgrammeCPAN - CSD2007-00042 and by Junta de Andalucía FQM-160 and P07-FQM-02894.
NO Fondo Europeo de Desarrollo Regional (FEDER), UE
NO Unión Europea (UE)
NO Ministerio de Ciencia e Innovación (MICINN), España
NO Programa Consolider-Ingenio 2012
NO Junta de Andalucía
DS Docta Complutense
RD 6 abr 2025