Calculation of relaxation functions: A new development within the Mori formalism
- 15 June 1983
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 27 (12) , 7342-7347
- https://doi.org/10.1103/physrevb.27.7342
Abstract
The problem of expanding the correlation functions into continued fractions is considered in the light of a Mori-type formalism. First, we examine the techniques available in the literature for extracting the parameters of the Mori chain from the moments; then, on the basis of physical considerations, we provide a new surprisingly simple and efficient technique and discuss its significance. Some examples are given to illustrate the elegance and the convenience of our procedure.Keywords
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