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arXiv · 1704.01351

The Spectral Density of a Spin System Calculated for Solvable Models

B. V. Kryzhanovsky
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Abstract

The relationship between the spectral density and free energy of a spin system is considered. The analytical expressions allowing for the calculation of the spectral density for solvable models are determined. A linear Ising model is taken for testing the approach. Additionally, the approach is used to analyze the spectral density of a 2D Ising model, a Bethe-lattice model and a mean-field model. Even a small change of the spectral density is shown to be able to radically change the parameters of the system.

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B. V. Kryzhanovsky. 2017-04-05. The Spectral Density of a Spin System Calculated for Solvable Models. https://arxiv.org/abs/1704.01351

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