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quant-ph2015
Phase Diagrams of Systems of 2 and 3 levels in the presence of a Radiation Field
Eduardo Nahmad-Achar, Sergio Cordero, Octavio Castaños +1
We study the structure of the phase diagram for systems consisting of 2- and 3- level particles dipolarly interacting with a 1-mode electromagnetic field, inside a cavity, paying p…
quant-ph2012★ 25 cited
Universal Critical Behavior in the Dicke Model
Octavio Castaños, Eduardo Nahmad-Achar, Ramón López-Peña +1
The critical value of the atom-field coupling strength for a finite number of atoms is deter- mined by means of both, semiclassical and exact solutions. In the semiclassical approa…