Séminaire de Physique Théorique

Algebraic Bethe Ansatz for periodic XXX Heisenberg spin chain
Samuel Belliard (Montpellier)
Wednesday 13 November 2013 14:00 -  Tours -  Salle 1180 (Bât E2)

Résumé :
The periodic XXX Heisenberg spin chain is one of the simplest quantum integrable models. We will review the spectrum and the states of this model in Algebraic Bethe ansatz framework [Leningrad's school 79] when the model have U(1) symmetry, so-called "diagonal twist case" . Then the generalization of the algebraic Bethe ansatz for the case with broken U(1) symmetry will be consider, so-called "non-diagonal twist case". This seminar is based on technique developed for open XXX Heisenberg spin chain in collaboration with N. Crampé arXiv:1309.6165 and unpublished results.

Liens :