THERMO FIELD DYNAMICS IN TIME REPRESENTATION
1994 ◽
Vol 09
(07)
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pp. 1153-1180
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Keyword(s):
Making use of the thermo field dynamics (TFD) we formulate a calculable method for time-dependent nonequilibrium systems in a time representation (t-representation) rather than in the k0-Fourier representation. The corrected one-body propagator in the t-representation has the form of B−1 (diagonal matrix) B (B being a thermal Bogoliubov matrix). The number parameter in B here is the observed number (the Heisenberg number) with a fluctuation. With the usual definition of the on-shell self-energy a self-consistent renormalization condition leads to a kinetic equation for the number parameter. This equation turns out to be the Boltzmann equation, from which the entropy law follows.
1995 ◽
Vol 10
(11)
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pp. 1693-1700
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2012 ◽
Vol 27
(14)
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pp. 1250078
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2018 ◽
Vol 32
(10)
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pp. 1850111
Keyword(s):
1992 ◽
Vol 07
(37)
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pp. 3509-3520
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Keyword(s):
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1996 ◽
Vol 11
(16)
◽
pp. 1331-1337
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Keyword(s):