VARIATIONAL PATH-INTEGRAL APPROACH TO A NONLINEAR OPEN SYSTEM

Authors
BAO JD ZHUO YZ WU XZ
Citation
Jd. Bao et al., VARIATIONAL PATH-INTEGRAL APPROACH TO A NONLINEAR OPEN SYSTEM, Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics, 52(5), 1995, pp. 5656-5659
Citations number
20
Categorie Soggetti
Physycs, Mathematical","Phsycs, Fluid & Plasmas
Journal title
Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics → ACNP
ISSN journal
1063651X
Volume
52
Issue
5
Year of publication
1995
Part
B
Pages
5656 - 5659
Database
ISI
SICI code
1063-651X(1995)52:5<5656:VPATAN>2.0.ZU;2-5
Abstract
The variational path-integral method is used to calculate the partitio n function with an effective potential of a nonlinear open system, whi ch is described by the system-plus-environment model. The two variatio nal parameters corresponding to the potential and the coupling form fa ctor, respectively, in the quadratic trial action are determined by mi nimizing the effective potential. A general expression for the partiti on function at finite temperature is obtained.