Testing the heating method with perturbation theory

被引：5

作者：

Alles, B ^{[1
]}

Beccaria, M ^{[1
]}

Farchioni, F ^{[1
]}

机构：

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

来源：

PHYSICAL REVIEW D | 1996年 / 54卷 / 01期

关键词：

D O I：

10.1103/PhysRevD.54.1044

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The renormalization constants present in the lattice evaluation of the topological susceptibility can be nonperturbatively calculated by using the so-called heating method. We test this method for the O(3) nonlinear sigma model in two dimensions. We work in a regime where perturbative calculations are exact and useful to check the values obtained from the heating method. The result of the test is positive and it clarifies some features concerning the method. Our procedure also allows a rather accurate determination of the first perturbative coefficients.

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页码：1044 / 1049

页数：6

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