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A Variational Linear Approach for the Free Energy Applied to the Ising Model
Author(s) -
Ferreira J. R. Faleiro
Publication year - 1988
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221480230
Subject(s) - ising model , hamiltonian (control theory) , statistical physics , chain (unit) , mathematical physics , variational method , square lattice ising model , physics , mathematics , quantum mechanics , mathematical optimization
A recently proposed variational approach is applied to the Ising model. Former results may be improved when a sum of linear chain Hamiltonians is used as an auxiliary Hamiltonian instead of a sum of single particle Hamiltonians.
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