Browsing by Author "HUERTA, L"
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- ItemA GAUGE-THEORY APPROACH TO A GENERALIZED HUBBARD-MODEL(1993) HUERTA, L; KIWI, MWe present a gauge-invariant reformulation of the Hubbard model, which assumes a set of arbitrarily chosen local spin quantization axes. This way, the macroscopic spin angular degrees of freedom are described by gauge fields. An effective interaction between fermions, with a long-range confining potential. is thus obtained. We compute the ground state energy of the gauged model in the one-dimensional version, for a classical configuration of the gauge sector. It is shown that gauge fields contribute to stabilize the antiferromagnetic configuration. A brief discussion on possibilities unveiled by this formulation is also given.
- ItemBOSE-FERMI TRANSFORMATION IN 3-DIMENSIONAL SPACE(1993) HUERTA, L; ZANELLI, JA generalization of the Jordan-Wigner transformation to three (or higher) dimensions is constructed. The nonlocal mapping of spin to fermionic variables is expressed as a gauge transformation with topological charge equal to 1. The resulting fermionic theory is minimally coupled to a non-Abelian gauge field in a spontaneously broken phase containing monopoles.
- ItemBOSON-FERMION TRANSMUTATION IN (2+1) DIMENSIONS(1989) HUERTA, L; RUIZALTABA, M
- ItemSTABLE FIELD CONFIGURATIONS IN THE LARGE-N LIMIT - STOCHASTIC APPROACH(1988) ALFARO, J; HUERTA, L
- ItemSUPER-POISSONIAN EFFECTS IN A QUANTUM MODEL FOR A FREE-ELECTRON LASER(1985) HUERTA, L; ORSZAG, M