On the Hubbard model in the limit of vanishing interaction

authored by

Holger Frahm, Markus P. Pfannmüller

Abstract

We address the question how a correspondence between particle-like excitations in the one-dimensional Hubbard model (i.e. "holons" and "spinons") and the free fermionic picture can be established in the limit of vanishing interaction by studying the finite size spectrum in the framework of the Bethe ansatz. Special attention has to be paid to the case of a vanishing magnetic field where the two bands of excitations in either description are degenerate. The interaction lifts this degeneracy.

Organisation(s)

Institute of Theoretical Physics

Type

Article

Journal

Physics Letters A

Volume

204

Pages

347-352

No. of pages

6

ISSN

0375-9601

Publication date

28.08.1995

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

Physics and Astronomy(all)

Electronic version(s)

https://arxiv.org/abs/cond-mat/9505146 (Access: Open)
https://doi.org/10.1016/0375-9601(95)00499-S (Access: Unknown)