THE TOPOLOGICAL SUSCEPTIBILITY OF THE 2D O(3)SIGMA MODEL

被引：15

作者：

DIGIACOMO, A ^{[1
]}

FARCHIONI, F ^{[1
]}

PAPA, A ^{[1
]}

VICARI, E ^{[1
]}

机构：

[1] IST NAZL FIS NUCL,SEZ PISA,I-56100 PISA,ITALY

来源：

PHYSICS LETTERS B | 1992年 / 276卷 / 1-2期

关键词：

D O I：

10.1016/0370-2693(92)90555-I

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study the topological susceptibility, chi, of the 2D O(3) sigma-model by defining a density of topological charge as a local polynomial of the spin variables on the lattice. Following the field theoretical prescriptions we perform the additive and multiplicative renormalizations needed to extract-chi from Monte Carlo data. By numerical simulations we show that the field theoretical definition and the cooling method give a consistent determination of chi.

引用

页码：148 / 154

页数：7

共 20 条

[1]

ALLES B, 1991, PHYS LETT B, V268, P291

[2] DEFINITION AND STATISTICAL DISTRIBUTIONS OF A TOPOLOGICAL NUMBER IN THE LATTICE O(3) SIGMA-MODEL [J].