منابع مشابه
Generalized CP 1 model from t 1 − t 2 − J model
A long-wavelength, low-frequency effective theory is obtained from t1− t2−J model. The action is written in terms of two-component bose spinor fields (CP 1 fields) and two spinless Fermi fields. The generalized CP 1 model is invariant under U(1) gauge transformations. The bose fields and one of the Fermi fields have charge +1 while the other Fermi field has charge −1 with respect to these trans...
متن کامل1 J ul 1 99 9 Boundary Kondo impurities in the generalized supersymmetric t − J model
We study the generalized supersymmetric t − J model with Kondo impurities in the boundaries. We first construct the higher spin operator K-matrix for the XXZ Heisenberg chain. Setting the boundary parameter to be a special value, we find a higher spin reflecting K-matrix for the supersymmetric t− J model. By using the Quantum Inverse Scattering Method, we obtain the eigenvalue and the correspon...
متن کاملGeneralized concept of $J$-basis
A generalization of Schauder basis associated with the concept of generalized analytic functions is introduced. Corresponding concepts of density, completeness, biorthogonality and basicity are defined. Also, corresponding concept of the space of coefficients is introduced. Under certain conditions for the corresponding operators, some properties of the space of coefficients and basicity crite...
متن کاملun 1 99 9 Exact diagonalization of the generalized supersymmetric t − J model with boundaries
We study the generalized supersymmetric t−J model with boundaries. Starting from the trigonometric R-matrix, and in the framework of the graded quantum inverse scattering method (QISM), we obtain the eigenvalues and Bethe ansatz equations of the supersymmetric t−J model with boundaries in three different backgrounds. PACS: 75.10.Jm, 71.10.Fd, 05.30.Fk.
متن کاملSuperconductivity and incommensurate spin fluctuations in a generalized t− J model for the cuprates
We consider the slave-fermion Schwinger-boson decomposition of an effective model obtained through a systematic low-energy reduction of the three-band Hubbard Hamiltonian. The model includes a three-site term t′′ similar to that obtained in the large-U limit of the Hubbard model but of opposite sign for realistic or large O-O hopping. For parameters close to the most realistic ones for the cupr...
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ژورنال
عنوان ژورنال: Journal of Physics A: Mathematical and General
سال: 1994
ISSN: 0305-4470,1361-6447
DOI: 10.1088/0305-4470/27/11/021