J. Phys. Soc. Jpn. 58 (1989) pp. 1199-1206 |Next Article| |Table of Contents|
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Two-Time Correlation Functions of a System Coupled to a Heat Bath with a Gaussian-Markoffian Interaction
Yoshitaka Tanimura and
Ryogo Kubo
Department of Physics, Faculty of Science and Technology, Keio University
(Received November 14, 1988)
Two-time correlation functions of physical operators of a system interacting with a heat bath producing a Gaussian-Markoffian noise are treated with the use of Feynman-Vernon's influence functional formalism. The Laplace transforms of correlation functions are shown to be expressed in terms of continued fractions of relevant hyperoperators. The result is valid to all orders of the system-bath interaction. In the limitation of motional narrowing, it reduces to those obtained in conventional methods.
©1989 The Physical Society of Japan
URL:
http://jpsj.ipap.jp/link?JPSJ/58/1199/
DOI: 10.1143/JPSJ.58.1199
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