منابع مشابه
Supersymmetric T-j Model without Translational Invariance
In this work, we continue the study of the supersymmetric t-J model with 1/r2 hopping and exchange without translational invariance. A set of Jastrow eigenfunctions are obtained for the system, with eigenenergies explicitly calculated. The ground state of the t-J model is included in this set of wavefunctions. The spectrum of this t-J model consists of equal-distant energy levels which are high...
متن کاملSupersymmetric T-j Models
In this work, we have studied the invariants of motion of two SU (N) super-symmetric t-J models of 1/r 2 hopping and exchange in one dimension. The first model is defined on a lattice of equal spaced sites, and the second on a non-equal spacing lattice. Using the " exchange operator formalism " , we are able to construct all the invariants for the models, by mapping the systems to mixtures of f...
متن کاملNew Integrable Version of the Degenerate Supersymmetric T-j Model
A new integrable version of the degenerate supersymmetric t-J model is proposed. In this formulation instead of restricting single occupancy of electrons at each lattice site we may have up to two electrons at each site. As a requirement of exact integrability the hopping interaction turns out to be correlated with the density of electrons in the neighboring sites. The exact solution of the mod...
متن کاملThermodynamics and Excitations of the Supersymmetric t− J Model
The free energy of the supersymmetric t − J model is expressed in terms of finite temperature excitations above thermodynamic equilibrium. This reveals that the free energy has the form of noninteracting fermions with temperature dependant excitation spectra. We also discuss the ground state and zero temperature excitations. PACS numbers:75.10-b 71.20AD
متن کاملThe Supersymmetric t-J Model with a Boundary
An open supersymmetric t-J chain with boundary fields is studied by means of the Bethe Ansatz. Ground state properties for the case of an almost half-filled band and a bulk magnetic field are determined. Boundary susceptibilities are calculated as functions of the boundary fields. The effects of the boundary on excitations are investigated by constructing the exact boundary S-matrix. From the a...
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ژورنال
عنوان ژورنال: Acta Physica Polonica A
سال: 1995
ISSN: 0587-4246,1898-794X
DOI: 10.12693/aphyspola.88.1119