Eur. Phys. J. B 5, 309-312 (1998)
https://doi.org/10.1007/s100510050447

Off-diagonal long-range order in a supersymmetric integrable model of correlated electrons^*

¹ Department of Mathematics, University of Queensland, St Lucia, QLD, 4072, Australia
² Instítuto de Física da UFRGS, Av Bento Gonçalves 9500, Porto Alegre, RS, Brazil

Corresponding author: ^a jrl@maths.uq.edu.au

Received: 9 December 1997
Revised: 12 February 1998
Accepted: 17 March 1998
Published online: 15 October 1998

Abstract

A new model for correlated electrons is presented which is integrable in one-dimension. The symmetry algebra of the model is the Lie superalgebra gl(2|1) which depends on a continuous free parameter. This symmetry algebra contains the η pairing algebra as a subalgebra which is used to show that the model exhibits Off-Diagonal Long-Range Order in any number of dimensions.