Diagram technique for calculating long-wave fluctuation effects
Abstract
The contribution of long-wave fluctuations to macroscopic equations of the hydrodynamical type is studied. The generating functional, enbaling one to formulate the standard technique of Feynman diagrams for calculating the fluctuation interaction higher-order effects, is found. It is shown that in the second order of the perturbation theory the diagram technique is equivalent to the kinetic equation for the fluctuation distribution function.
- Publication:
-
Physics Letters A
- Pub Date:
- March 1983
- DOI:
- 10.1016/0375-9601(83)90716-8
- Bibcode:
- 1983PhLA...94..271K