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On the spectral relations for multitime correlation functions

A. M. Shvaika
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Abstract

A general approach for derivation of the spectral relations for the multitime correlation functions is presented. A special attention is paid to the consideration of the non-ergodic (conserving) contributions and it is shown that such contributions can be treated in a rigorous way using multitime temperature Green functions. Representation of the multitime Green functions in terms of the spectral densities and solution of the reverse problem -- finding of the spectral densities from the known Green functions are given for the case of the three-time correlation functions.

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A. M. Shvaika. 2006-04-27. On the spectral relations for multitime correlation functions. https://doi.org/10.5488/cmp.9.3.447

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