1977•Physics Letters ARequires access

Degenerate perturbation theory and its application to the Hubbard model

K. A. Chao, J. Spałek, Andrzej M. Oleś

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Key concepts: Physics, Degenerate energy levels, Hubbard model, Perturbation theory (quantum mechanics), Ground state, Perturbation (astronomy), Mathematical physics, Canonical transformation

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