Landau free energy of small clusters beyond mean-field approach.
basic_science · Level V
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- Record sourced from PubMed, PMID 39160974.
- Also identified by DOI 10.1103/PhysRevE.110.L012101.
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Abstract
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 semianalytical approach based on the fluctuating local field method, which allows us to estimate Landau free energy for small clusters with discrete (Ising model) and continuous (Heisenberg model) order parameter.