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

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http://prd.aps.org/abstract/PRD/v81/i1/e014505
Original languageEnglish
Article number014505
Pages (from-to)-
Number of pages13
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume81
Issue number1
DOIs
Publication statusPublished - 14 Jan 2010

Abstract

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.

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