On the equivalence of some projection operator techniques

Jan Peřina

Physica A: Statistical Mechanics and its Applications, 1995, vol. 214, issue 2, 309-318

Abstract: It is shown that equations of motion for mean values of operators derived from the time-convolution (time-convolutionless) generalized master equation for the density matrix and from the equations for operators from the Mori (Tokuyama-Mori) theory are the same, provided that projectors are suitably chosen. This is valid also for systems described by time-dependent Hamiltonians. We can emphasize that the equivalence of the correponding equations remains valid when invoking approximations.

Date: 1995
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:214:y:1995:i:2:p:309-318

DOI: 10.1016/0378-4371(94)00267-W

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