Bremsstrahlung Radiation as Coherent State in Thermal QED

Details Bremsstrahlung Radiation as Coherent State in Thermal QED Bremsstrahlung Radiation as Coherent State in Thermal QED

2001-10-23

arxiv.org/abs/hep-ph/0110288v1

J.Phys.G27:2379-2388,2001

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages, 2 figures

Scientific paper

10.1088/0954-3899/27/12/301

Based on fully finite temperature field theory we investigate the radiation probability in the bremsstrahlung process in thermal QED. It turns out that the infrared divergences resulting from the emission and absorption of the real photons are canceled by the virtual photon exchange processes at finite temperature. The full quantum calculation results for soft photons radiation coincide completely with that obtained in the semi-classical approximation. In the framework of Thermofield Dynamics it is shown that the bremsstrahlung radiation in thermal QED is a coherent state, the quasiclassical behavior of the coherent state leads to above coincidence.

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