New integrable model of correlated electrons with off-diagonal long-range order from so(5) symmetry

Authors
Foerster, A Links, J Roditi, I
Citation
A. Foerster et al., New integrable model of correlated electrons with off-diagonal long-range order from so(5) symmetry, J PHYS A, 32(41), 1999, pp. L441-L445
Citations number
27
Categorie Soggetti
Physics
Journal title
JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL
ISSN journal
03054470 → ACNP
Volume
32
Issue
41
Year of publication
1999
Pages
L441 - L445
Database
ISI
SICI code
0305-4470(19991015)32:41<L441:NIMOCE>2.0.ZU;2-5
Abstract
We present a new integrable model for correlated electrons which is based o n so(5) symmetry. By using an eta-pairing realization we construct eigensta tes of the Hamiltonian with off-diagonal long-range order. It is also shown that these states lie in the ground state sector. We exactly solve the mod el on a one-dimensional lattice by the Bethe ansatz.