• Artículo
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      Excited-state phase transition and onset of chaos in quantum optical models 

      Pérez Fernández, Pedro; Relaño, Armando; Arias Carrasco, José Miguel; Cejnar, P.; Dukelsky, Jorge; García Ramos, José Enrique (American Physical Society, 2011)
      We study the critical behavior of excited states and its relation to order and chaos in the Jaynes-Cummings and Dicke ...
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      Quantum quench influenced by an excited-state phase transition 

      Pérez Fernández, Pedro; Cejnar, P.; Arias Carrasco, José Miguel; Dukelsky, Jorge; García Ramos, José Enrique; Relaño, Armando (American Physical Society, 2011)
      We analyze excited-state quantum phase transitions (ESQPTs) in three schematic (integrable and nonintegrable) models ...