APS » PROLA » Phys. Rev. B » Volume 56 » Issue 11

Phys. Rev. B 56, 6376 - 6379 (1997)

Solution of a supersymmetric model of correlated electrons

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M. J. Martins
Instituut voor Theoretische Fysica, Universiteit van Amsterdam, Valcknierstraat 65, 1018 XE Amsterdam, The Netherlands
Departamento de Física, Universidade Federal de São Carlos, Caixa Postal 676, 13565-905, São Carlos, Brazil

P. B. Ramos
Departamento de Física, Universidade Federal de São Carlos, Caixa Postal 676, 13565-905, São Carlos, Brazil

Received 11 April 1997

We consider the exact solution of a model of correlated electrons based on the superalgebra Osp(2|2). The corresponding Bethe ansatz equations have an interesting form. We derive an expression for the ground-state energy at half filling. We also present the eigenvalue of the transfer matrix commuting with the Hamiltonian.


©1997 The American Physical Society

URL: http://link.aps.org/abstract/PRB/v56/p6376
DOI: 10.1103/PhysRevB.56.6376
PACS: 71.27.+a, 75.10.Jm

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