Quantum phase transitions and spontaneous symmetry-breaking in Dicke model

Puebla, R.; Relaño, A.; Retamosa, J.
June 2013
AIP Conference Proceedings;Jun2013, Vol. 1541 Issue 1, p191
Academic Journal
A method to find the Excited-States Quantum Phase Transitions (ESQPT's) from paritysymmetry in the Dicke model is studied and presented. This method allows us to stablish a critical energy where ESQPT's take places, and divides the whole energy spectrum in two regions with different properties.


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