International Journal of Modern Physics BTIME EVOLUTION OF THE PHASE OPERATOR IN INTERACTING FOCK SPACEPradip DasPublished Jun 30, 2004• 0 citationsPublisherAbstractHere we discuss interaction of a single two-level atom with a single mode of interacting electromagnetic field in the Jaynes–Cummings model with the rotating wave approximation.DOI10.1142/s0217979204026081