Journal de Physique I

Extension of the Popov-Fedotov method to arbitrary spin

O. Veits, R. Oppermann, M. Binderberger, J. Stein

Published Apr 1, 1994• 19 citations

Abstract

The partition function and thermodynamic expectation values of a spin system with arbitrary spin quantum number are expressed by an exact fermionic representation on Fock space. Extending a suggestion of Popov and Fedotov, this is achieved by introducing a set of imaginary chemical potentials. Spin operators are replaced by usual bilinear combinations of Fermi operators satisfying the spin commutation relations.

DOI: 10.1051/jp1:1994154

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