Field strength correlators in the instanton gas:: The importance of the two-instanton contribution -: art. no. 096004

被引：12

作者：

Ilgenfritz, EM ^{[1
]}

Martemyanov, BV

Müller-Preussker, M

机构：

[1] Osaka Univ, Nucl Phys Res Ctr, Suita, Osaka 565, Japan

[2] Inst Theoret & Expt Phys, Moscow 117259, Russia

[3] Humboldt Univ, Inst Phys, Berlin, Germany

来源：

PHYSICAL REVIEW D | 2000年 / 62卷 / 09期

关键词：

D O I：

10.1103/PhysRevD.62.096004

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The field strength correlators at zero temperature are semiclassically evaluated fitting the random instanton liquid model to lattice data for quenched SU(3) lattice gauge theory. We restrict ourselves to the lowest order in an instanton density expansion necessary to explain the difference between D-perpendicular to and D-parallel to. In this instanton-instanton and instanton-anti-instanton contributions the Schwinger line factors-neglected in a previous analysis-are numerically taken into account in a weighted Monte Carlo evaluation. This leads to different estimates for instanton size and density. A reasonable description of the correlators within the intermediate range from 0.4 to 1 fm is obtained.

引用

页码：1 / 7

页数：7

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