Topology of Minimal Walking Technicolor

Abstract

We perform a lattice study of the topological susceptibility and instanton size distribution of the $\su{2}$ gauge theory with two adjoint Dirac fermions (also known as Minimal Walking Technicolor), which is known to be in the conformal window. In the theory deformed with a small mass term, by drawing a comparison with the pure gauge theory, we find that topological observables are decoupled from the fermion dynamics. This provides further evidence for the infrared conformality of the theory. A study of the instanton size distribution shows that this quantity can be used to detect the onset of finite size effects.

An error in the analysis has been corrected that does not affect the result. Discussions have been expanded, comments and references added, conclusions unchanged. Version to appear on EPJC

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Cited by in corpus (6)

• The infrared regime of SU(2) with one adjoint Dirac flavour
• Mass anomalous dimension of Adjoint QCD at large N from twisted volume reduction
• Investigating the conformal behaviour of SU(2) with one adjoint Dirac flavor
• Infrared conformality and bulk critical points: SU(2) with heavy adjoint quarks
• Numerical results for gauge theories near the conformal window
• SU(2) gauge theory with one and two adjoint fermions towards the continuum limit