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Transformation of the Hubbard Hamiltonian to the t-J Hamiltonian using the Raleigh- Schrodinger Perturbation Expansion


EO Aiyohuyin
FO Ezomo
A Oni-Ojo

Abstract

The t-J model is deduced from the Hubbard model using Rayleigh-Schrodinger perturbation theory. The exchange is antiferromagnetic as found by other workers.


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eISSN: 1116-4336