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Diagonalization of a coupled supersymmetric t-J model and its ground-state properties

Title
Diagonalization of a coupled supersymmetric t-J model and its ground-state properties
Authors
Park S.Lee K.
Ewha Authors
이공주복
SCOPUS Author ID
이공주복scopus
Issue Date
2001
Journal Title
Journal of Physics A: Mathematical and General
ISSN
0305-4470JCR Link
Citation
vol. 34, no. 13, pp. 2787 - 2799
Indexed
SCOPUS WOS scopus
Abstract
We obtain an integrable two-leg supersymmetric t-J model through the algebraic Bethe ansatz scheme in the BFF grading. In this model, the two t-J chains interact with each other via a coupling constant κ. The model reduces to a two-chain Heisenberg spin model when the bosonic degrees of freedom are turned off and to two decoupled t-J chains when κ = 0. The construction of the diagonalized Hamiltonian yields the Bethe ansatz equations. We also obtain thermodynamic Bethe ansatz equations and calculate the magnetic susceptibility at a weak magnetic field and at zero temperature.
DOI
10.1088/0305-4470/34/13/310
Appears in Collections:
자연과학대학 > 물리학전공 > Journal papers
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