Prog. Theor. Phys. Vol. 84 No. 1 (1990) pp. 81-93

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Statistical Mechanics of a Spin-Boson System

— The Dynamic Compensation Theorem and the Exact Partition Function —

Toshio Tsuzuki

Department of Physics, Tohoku University, Sendai 980

(Received March 9, 1990)

Abstract:

We first extend the dynamic compensation theorem of infrared divergence for the case of finite temperatures and then obtain the exact partition function of the spin-boson system, which is different from the previous ones. We find that there exists no thermodynamic equivalence between the spin-boson system and the Kondo system in general and that such equivalence is restricted to the case of high temperature limit.

URL : http://ptp.ipap.jp/link?PTP/84/81/
DOI : 10.1143/PTP.84.81

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Citing Article(s) :

Progress of Theoretical Physics Vol. 84 No. 2 (1990) pp. 228-232 :
Statistical Mechanics of a Spin-Boson System. II

Toshio Tsuzuki
Progress of Theoretical Physics Vol. 85 No. 1 (1991) pp. 31-37 :
Statistical Mechanics of a Spin-Boson System. III

Toshio Tsuzuki
Progress of Theoretical Physics Vol. 85 No. 2 (1991) pp. 205-219 :
Dynamics of a Spin-Boson System

Toshio Tsuzuki
Progress of Theoretical Physics Vol. 87 No. 3 (1992) pp. 569-581 :
Ground State of a Spin-Boson System. II

Toshio Tsuzuki