Mass anomalous dimension in SU(2) with two adjoint fermions

被引：93

作者：

Bursa, Francis ^{[1
]}

Del Debbio, Luigi ^{[2
]}

Keegan, Liam ^{[2
]}

Pica, Claudio ^{[2
]}

Pickup, Thomas ^{[3
]}

机构：

[1] Univ Cambridge Jesus College, Cambridge CB5 8BL, England

[2] Univ Edinburgh, Sch Phys & Astron, SUPA, Edinburgh EH9 3JZ, Midlothian, Scotland

[3] Univ Oxford, Rudolf Peierls Ctr Theoret Phys, Oxford OX1 3NP, England

来源：

PHYSICAL REVIEW D | 2010年 / 81卷 / 01期

基金：

英国工程与自然科学研究理事会;

关键词：

RENORMALIZATION; COMPUTATION; PHYSICS; QCD;

D O I：

10.1103/PhysRevD.81.014505

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study SU(2) lattice gauge theory with two flavors of Dirac fermions in the adjoint representation. We measure the running of the coupling in the Schrodinger functional scheme and find it is consistent with existing results. We discuss how systematic errors affect the evidence for an infrared fixed point (IRFP). We present the first measurement of the running of the mass in the Schrodinger functional scheme. The anomalous dimension of the chiral condensate, which is relevant for phenomenological applications, can be easily extracted from the running of the mass, under the assumption that the theory has an IRFP. At the current level of accuracy, we can estimate 0.05 < gamma < 0.56 at the IRFP.

引用

页数：13

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