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

Sooa Park, K. Lee

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


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.

Original languageEnglish
Pages (from-to)2787-2799
Number of pages13
JournalJournal of Physics A: Mathematical and General
Issue number13
StatePublished - 6 Apr 2001


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