Remarks and generalizations about SU2×SU2 symmetry of Hubbard models
1991; Elsevier BV; Volume: 161; Issue: 3 Linguagem: Inglês
10.1016/0375-9601(91)90020-9
ISSN1873-2429
Autores Tópico(s)Magnetism in coordination complexes
ResumoRemarks and generalizations are made about SU2×SU2 symmetry in Hubbard models. In particular, it is shown that the symmetry is a very general property of many Hubbard models. Periodicity is not a requirement for the validity of the symmetry. By a transformation of the creation and annihilation operators into anticommuting γ matrices, the symmetry is made transparent.
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