arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 0910.4535hep-phhep-lat
收藏

具有两个伴随费米子的SU(2)中的质量反常维数

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

Francis Bursa, Luigi Del Debbio, Liam Keegan, Claudio Pica, Thomas Pickup

摘要:

本文研究了伴随表象下具有两种Dirac费米子的SU(2)格点规范理论。我们测量了薛定谔泛函(SF)方案中耦合的运行,发现它与现有的结果是一致的。讨论了系统误差对红外固定点证据的影响。我们提出的SF计划中的质量运行的第一个测量。手征凝聚体的反常维数与唯象学应用有关,在假设该理论具有IRFP的情况下,可以很容易地从质量的运行中提取出来。在目前的精度水平下,我们可以在IRFP上估计0.05 < gamma < 0.56。

英文摘要:

We study SU(2) lattice gauge theory with two flavours of Dirac fermions in the adjoint representation. We measure the running of the coupling in the Schroedinger Functional (SF) 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 SF 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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑