Exact solution and spectral flow for twisted Haldane-Shastry model

Дата и время публикации : 1996-04-23T04:44:06Z

Авторы публикации и институты :
T. Fukui
N. Kawakami

Ссылка на журнал-издание: Phys.Rev.Lett. 76 (1996) 4242-4245
Коментарии к cтатье: 4 pages, revtex, 1 figure available on request, to appear in PRL
Первичная категория: cond-mat

Все категории : cond-mat, hep-th

Краткий обзор статьи: The exact solution of the spin chain model with $1/r^2$ exchange is found for twisted boundary conditions. The spectrum thus obtained can be reproduced by the asymptotic Bethe ansatz. The spectral flow of each eigenstate is determined exactly as a function of the twist angle. We find that the period $4pi$ for the ground state nicely fits in with the notion of fractional exclusion statistics.

Category: Physics