Spectrum of SU(2) lattice gauge theory with two adjoint Dirac flavours

Abstract

An SU(2) gauge theory with two fermions transforming under the adjoint representation of the gauge group may appear conformal or almost conformal in the infrared. We use lattice simulations to study the spectrum of this theory and present results on the masses of several gauge singlet states as a function of the physical quark mass determined through the axial Ward identity and find indications of a change from chiral symmetry breaking to a phase consistent with conformal behaviour at beta_L ~ 2. However, the measurement of the spectrum is not alone sufficient to decisively confirm the existence of conformal fixed point in this theory as we show by comparing to similar measurements with fundamental fermions. Based on the results we sketch a possible phase diagram of this lattice theory and discuss the applicability and importance of these results for the future measurement of the evolution of the coupling constant.

References in corpus (17)

• Strong Dynamics and Electroweak Symmetry Breaking
• Unparticle Physics
• Orientifold theory dynamics and symmetry breaking
• Walking in the SU(N)
• Another Odd Thing About Unparticle Physics
• Light Composite Higgs from Higher Representations versus Electroweak Precision Measurements -- Predictions for LHC
• Spontaneous Flavor and Parity Breaking with Wilson Fermions
• Lattice Study of the Conformal Window in QCD-like Theories
• Collider signals in unparticle physics
• Minimal Walking on the Lattice
• Supersymmetry Inspired QCD Beta Function
• Zero of the discrete beta function in SU(3) lattice gauge theory with color sextet fermions
• Phase diagram of SU(2) with 2 flavors of dynamical adjoint quarks
• Deconfinement and Chiral Symmetry Restoration in an SU(3) Gauge Theory with Adjoint Fermions
• The Phase Structure of an SU(N) Gauge Theory with N_f Flavors
• Unparticle & Higgs as Composites
• Higher representations on the lattice: perturbative studies

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• Topology and higher dimensional representations
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• Lattice study of infrared behaviour in SU(3) gauge theory with twelve massless flavours
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• Higher Representations Duals
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