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arXiv · 2310.12679

Landau Free Energy of small clusters beyond mean field approach

S. Semenov·A. N. Rubtsov
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Abstract

The Landau Free Energy determines the landscape of order parameter fluctuations that occur in a physical system at thermal equilibrium and, in particular, characterizes the critical phenomena. We propose a semi-analytical approach based on the Fluctuating Local Field method, which allows to estimate Landau Free Energy for small clusters with discrete (Ising model) and continuous (Heisenberg model) order parameter.

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S. Semenov, A. N. Rubtsov. 2023-10-19. Landau Free Energy of small clusters beyond mean field approach. https://arxiv.org/abs/2310.12679

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