Infrared fixed point in SU(2) gauge theory with adjoint fermions

被引：78
|
作者：
DeGrand, Thomas [1 ]
Shamir, Yigal [2 ]
Svetitsky, Benjamin [2 ]
机构：
[1] Univ Colorado, Dept Phys, Boulder, CO 80309 USA
[2] Tel Aviv Univ, Raymond & Beverly Sackler Sch Phys & Astron, IL-69978 Tel Aviv, Israel
来源：
PHYSICAL REVIEW D | 2011年 / 83卷 / 07期
基金：
以色列科学基金会;
关键词：
QUARK MASS RENORMALIZATION; QCD; ALGORITHM;
D O I：
10.1103/PhysRevD.83.074507
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We apply Schrodinger-functional techniques to the SU(2) lattice gauge theory with N-f = 2 flavors of fermions in the adjoint representation. Our use of hypercubic smearing enables us to work at stronger couplings than did previous studies, before encountering a critical point and a bulk phase boundary. Measurement of the running coupling constant gives evidence of an infrared fixed point g(*) where 1/g(*)(2) = 0.20(4)(3).Lambda t the fixed point, we find a mass anomalous dimension gamma(m)(g(*)) = 0.31(6).
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页数：16
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