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

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

doi:10.1103/PhysRevD.81.014505

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

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

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

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.

Original language	English
Article number	014505
Pages (from-to)	-
Number of pages	13
Journal	Physical Review D
Volume	81
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevD.81.014505
Publication status	Published - 14 Jan 2010

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http://prd.aps.org/abstract/PRD/v81/i1/e014505

Cite this

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title = "Mass anomalous dimension in SU(2) with two adjoint fermions",

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

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