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Quantum Field Theoretic Treatment of the Casimir Effect at T > 0. Real Time Formalism — Free Field Approximation
Author(s) -
Scharnhorst K.,
Robaschik D.,
Wieczorek E.
Publication year - 1987
Publication title -
annalen der physik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.009
H-Index - 68
eISSN - 1521-3889
pISSN - 0003-3804
DOI - 10.1002/andp.19874990507
Subject(s) - casimir effect , propagator , physics , quantum field theory , feynman diagram , boundary value problem , thermal quantum field theory , photon , mathematical physics , formalism (music) , electromagnetic field , quantum mechanics , quantum , quantum gravity , quantum electrodynamics , art , musical , visual arts
The framework of real time quantum field theory at finite temperature is generalized to include boundary conditions for the electromagnetic field strength tensor. In the perturbation theory the usual Feynman rules remain, only the photon propagator is modified. As a first application the Casimir effect is studied in the free field approximation and the known results are rederived with the new method.