The 1/r2 t-J model in a magnetic field
Abstract
Description
We study the one-dimensional supersymmetric t-J model with 1/r2 interaction threaded by magnetic flux. Because of the long range interaction, the effect of this flux leads to a modification of the electron hopping term. We present an exact solution of this model for all values of the flux, concisely formulated as a set of Bethe-ansatz-like equations. This allows a computation of the persistent currents at zero temperature. It is found that the system violates Leggett's conjecture despite the fact that the long range t-J model is a special example of the Luttinger liquid university class.
13 pages, preprint of ETH and Rockefeller, submitted to Phys. Rev. Lett. (June 1996)
13 pages, preprint of ETH and Rockefeller, submitted to Phys. Rev. Lett. (June 1996)