Ladder operator for the one-dimensional Hubbard model


Autoria(s): Links, Jon; Zhou, Huan-Qiang; McKenzie, Ross H.; Gould, Mark D.
Contribuinte(s)

M. Blume

Data(s)

28/05/2001

Resumo

The one-dimensional Hubbard model is integrable in the sense that it has an infinite family of conserved currents. We explicitly construct a ladder operator which can be used to iteratively generate all of the conserved current operators. This construction is different from that used for Lorentz invariant systems such as the Heisenberg model. The Hubbard model is not Lorentz invariant, due to the separation of spin and charge excitations. The ladder operator is obtained by a very general formalism which is applicable to any model that can be derived from a solution of the Yang-Baxter equation.

Identificador

http://espace.library.uq.edu.au/view/UQ:13784/UQ13784.pdf

http://espace.library.uq.edu.au/view/UQ:13784

Idioma(s)

eng

Publicador

The American Physical Society

Palavras-Chave #Yang-Baxter equation #one-dimensional Hubbard model #240203 Condensed Matter Physics - Electronic and Magnetic Properties; Superconductivity
Tipo

Journal Article