The Method of Linear Equations for Nonzero Temperatures in One-Dimensional Ising Models

M. Błaszyk Institute of Physics, A. Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland

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Received: 02 12 2004;

The method of linear equations was applied to nonzero temperatures. Two models were considered. The first is the disordered model of random ferromagnetic and antiferromagnetic integrals whose transition matrix meets the condition of invariance of the sum of terms in each line. Although the other model (one-dimensional Ising model in an external field) is devoid of disorder it does not require any assumptions on the form of the transition matrix.

DOI: 10.12693/APhysPolA.107.451 PACS numbers: 05.50.+q, 75.10.Nr, 75.50.Lk