Pairing Scenarios for the Hubbard Model in the Strong Coupling Limit |
| V.A. Apinyan and T.K. Kopeć
Institute for Low Temperature and Structure Research, P.O. Box 1410, 50-950 Wrocław 2, Poland |
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| Received: 6 11 2007; |
| We consider a spin-rotationally invariant Hubbard model. The original electron operator is presented in the charge-spin-fermion U(1)×SU(2) factorized form. The factorization procedure is given in terms of the emergent gauge fields. As a result, the electron appears like a composite object consisting of strongly fluctuating phase field and spatially rotating spin axis. Furthermore, we elaborate microscopically on the form of possible pairing states. |
| DOI: 10.12693/APhysPolA.114.159 PACS numbers: 71.27.+a, 71.10.Fd, 74.20.Rp |