Atomic Radiative Transitions in Thermo Field Dynamics

Details Atomic Radiative Transitions in Thermo Field Dynamics Atomic Radiative Transitions in Thermo Field Dynamics

2000-12-08

arxiv.org/abs/physics/0012016v3

Int. J. of Mod. Phys. A7 : 1079-1089 (2003)

Physics

Atomic Physics

LaTex file, 13 pages, no figures, includes PACS numbers and minor changes in the text where a new section has been added

Scientific paper

10.1142/S0217751X03012345

In this work we rederive the Lamb-Retherford energy shift for an atomic electron in the presence of a thermal radiation. Using the Dalibard, Dupont-Roc and Cohen-Tannoudji (DDC) formalism, where physical observables are expressed as convolutions of suitable statistical functions, we construct the electromagnetic field propagator of Thermo Field Dynamics in the Coulomb gauge in order to investigate finite temperature effects on the atomic energy levels. In the same context, we also analyze the problem of the ground state stability.

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