From chiral symmetry breaking to conformality in SU(2) gauge theory

2018/06/19 by Amato, Alessandro, Leino, Viljami, Rummukainen, Kari +2
#FOS: Physical sciences #High Energy Physics - Lattice (hep-lat)

paper · doi:10.48550/arxiv.1806.07154

Abstract

We compute the spectrum of SU(2) gauge theory with two, four or six Dirac fermions in the fundamental representation of the gauge group. We investigate the scaling of the meson masses as a function of the quark mass when approaching the chiral limit. We find behavior compatible with the usual pattern of chiral symmetry breaking at N_f≤ 4 and with the existence of an infrared fixed point at N_f=6. In the six flavor case we determine the anomalous dimension of the quark mass operator from the spectrum and find results fully consistent with earlier analyses.

Related

• Approaching Conformality with Ten Flavors
• Mapping the Conformal Window: SU(2) with 4, 6 and 10 flavors of fermions
• Approaching the conformal window: systematic study of the particle spectrum in SU(2) field theory with Nf=2, 4 and 6
• Lattice study for conformal windows of SU(2) and SU(3) gauge theories with fundamental fermions
• Exploring the conformal window: SU(2) gauge theory on the lattice