Fluctuations in a System with Internal Degrees of Freedom
- 1 July 1972
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 6 (1) , 320-326
- https://doi.org/10.1103/physreva.6.320
Abstract
The generalized Langevin approach of Mori is used to derive the relaxation matrix for a simple model system with internal degrees of freedom. The relationship between the damping matrix with a projected time dependence, and one with the usual time development is employed to compare the results obtained with those of Weinberg and Oppenheim. Furthermore, the conditions necessary to make a Markovian approximation are presented and discussed. Finally, a brief comparison is made with other works.Keywords
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