TY - JOUR AU - Pérez Fernández, P. AU - Relaño Pérez, Armando AU - Arias, J. M. AU - Cejnar, P. AU - Dukelsky, J. AU - García Ramos, J. E. PY - 2011 DO - 10.1103/PhysRevE.83.046208 SN - 1539-3755 UR - https://hdl.handle.net/20.500.14352/44411 T2 - Physical Review E AB - We study the critical behavior of excited states and its relation to order and chaos in the Jaynes-Cummings and Dicke models of quantum optics. We show that both models exhibit a chain of excited-state quantum phase transitions demarcating the upper... LA - eng PB - American Physical Society KW - Many-body systems KW - Light KW - Entanglement KW - Maser TI - Excited-state phase transition and onset of chaos in quantum optical models TY - journal article VL - 83 ER -