CaltechAUTHORS
  A Caltech Library Service

Effective classical partition functions

Feynman, R. P. and Kleinert, H. (1986) Effective classical partition functions. Physical Review A, 34 (6). pp. 5080-5084. ISSN 1050-2947. http://resolver.caltech.edu/CaltechAUTHORS:FEYpra86

[img]
Preview
PDF
See Usage Policy.

864Kb

Use this Persistent URL to link to this item: http://resolver.caltech.edu/CaltechAUTHORS:FEYpra86

Abstract

We present a method by which a quantum-mechanical partition function can be approximated from below by an effective classical partition function. The associated potential is obtained by a simple smearing procedure. For a strongly anharmonic oscillator and a double-well potential, the lowest approximation gives a free energy which is accurate to a few percent, even at zero temperature.


Item Type:Article
Additional Information:©1986 The American Physical Society. Received 20 May 1986. This work has been supported in part by Deutsche Forschungsgemeinschaft (Bonn, Germany) under Grant No. K1 256 and the U. S. Department of Energy under Contract No. DEAT-03-81ER-40029.
Record Number:CaltechAUTHORS:FEYpra86
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:FEYpra86
Alternative URL:http://dx.doi.org/10.1103/PhysRevA.34.5080
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:3553
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:14 Jun 2006
Last Modified:26 Dec 2012 08:55

Repository Staff Only: item control page