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

Abstract

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). At the fixed point, we find a mass anomalous dimension gamma_m(g*) = 0.31(6).

17 pages, 15 figures, 7 tables. Slight corrections in comparisons to published results -- final published version

References in corpus (12)

• Supersymmetry Inspired QCD Beta Function
• Higher-Loop Corrections to the Infrared Evolution of a Gauge Theory with Fermions
• The infrared dynamics of Minimal Walking Technicolor
• Spectrum of SU(2) lattice gauge theory with two adjoint Dirac flavours
• Rationale for UV-filtered clover fermions
• Beta Function and Anomalous Dimensions
• Scaling study of dynamical smeared-link clover fermions
• Low energy chiral constants from epsilon-regime simulations with improved Wilson fermions
• Improvement via hypercubic smearing in triplet and sextet QCD
• Probes of nearly conformal behavior in lattice simulations of minimal walking technicolor
• QCD-like technicolor on the lattice
• MCRG Minimal Walking Technicolor

Cited by in corpus (13)

• A precise determination of the psibar-psi anomalous dimension in conformal gauge theories
• Adjoint QCD on ${\mathbb{R}}^3\times S^1$ with twisted fermionic boundary conditions
• The infrared regime of SU(2) with one adjoint Dirac flavour
• A Very Light Dilaton
• Conformal Behavior at Four Loops and Scheme (In)Dependence
• Lattice study of infrared behaviour in SU(3) gauge theory with twelve massless flavours
• Improvement via hypercubic smearing in triplet and sextet QCD
• Non-perturbative beta function in three-dimensional electrodynamics
• Hadronic bound-states in SU(2) from Dyson--Schwinger Equations
• Mass Anomalous Dimension at Large N
• Conformal or confining -- results from lattice gauge theory for higher-representation gauge theories
• Large-N reduction with adjoint Wilson fermions
• Mapping the Conformal Window: SU(2) with 4, 6 and 10 flavors of fermions