Exact spin–spin correlation functions of Bethe lattice Ising and BEG models in external fields

We develop a transfer matrix method to compute exactly the spin–spin correlation functions for Bethe lattice Ising model and Blume–Emery–Griffiths (BEG) model in the external magnetic field h and for any temperature T. The correlation length ξ(T,h) obtained from the spin–spin correlation function shows interesting scaling and divergent behavior as h→0 and T approaches the critical temperature Tc.

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Year of publication:	1998
Authors:	Izmailian, N. Sh ; Hu, Chin-Kun
Published in:	Physica A: Statistical Mechanics and its Applications. - Elsevier, ISSN 0378-4371. - Vol. 254.1998, 1, p. 198-206
Publisher:	Elsevier
Subject:	Correlation function \| Bethe lattice \| Ising model

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Type of publication:	Article
Source:	RePEc - Research Papers in Economics

Persistent link: https://ebvufind01.dmz1.zbw.eu/10011063314