QCD beta function with two flavors of dynamical Wilson fermions

被引：11

作者：

Bitar, KM

Edwards, RG

Heller, UM

Kennedy, AD

机构：

[1] Supercomputer Computations Research Institute, Florida State University, Tallahassee, FL

来源：

PHYSICAL REVIEW D | 1996年 / 54卷 / 05期

关键词：

D O I：

10.1103/PhysRevD.54.3546

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We test the asymptotic scaling behavior of state-of-the-art simulations of QCD with two flavors of light Wilson fermions. This is done by matching pi and rho masses on lattices of size 16(3) X 32 and 8(3) x 16. We find that at beta=6/g(2)=5.3 matching is not possible over a range extending down to beta=3.5. The large lattice data at beta=5.5 matches the small lattice values at beta=4.9(1) leading to a shift Delta beta=0.6(1), considerably larger than the perturbative prediction of 0.45. In both cases we conclude that the simulations are very far from the asymptotic scaling region.

引用

页码：3546 / 3550

页数：5

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