Quantum Monte Carlo Study of Random Antiferromagnetic Heisenberg Chain

Дата и время публикации : 1998-03-09T01:30:28Z

Авторы публикации и институты :
Synge Todo
Kiyoshi Kato
Hajime Takayama

Ссылка на журнал-издание: Ссылка на журнал-издание не найдена
Коментарии к cтатье: 5 pages, 2 EPS figures; to be published in “Computer Simulation Studies in Condensed Matter Physics XI,” Eds. D. P. Landau and H.-B. Schuettler (Springer Verlag, Heidelberg, Berlin, 1998)
Первичная категория: cond-mat.dis-nn

Все категории : cond-mat.dis-nn, cond-mat.stat-mech

Краткий обзор статьи: Effects of randomness on the spin-1/2 and 1 antiferromagnetic Heisenberg chains are studied using the quantum Monte Carlo method with the continuous-time loop algorithm. We precisely calculated the uniform susceptibility, string order parameter, spatial and temporal correlation length, and the dynamical exponent, and obtained a phase diagram. The generalization of the continuous-time loop algorithm for the systems with higher-S spins is also presented.

Category: Physics