Equivalence of classical spins and Hartree-Fock-Bogoliubov approximation of the fermionic anharmonic oscillator

M.T. Thomaz and A.F.R. de Toledo Piza

Physica A: Statistical Mechanics and its Applications, 1995, vol. 218, issue 1, 237-244

Abstract: We show that the Hartree-Fock-Bogoliubov (alias Gaussian) approximation of the initial condition problem of the fermionic anharmonic oscillator is equivalent to a bosonic Hamiltonian system of two classical spins.

Date: 1995
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:218:y:1995:i:1:p:237-244

DOI: 10.1016/0378-4371(95)00100-L

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