Bulk transitions of twelve flavor QCD and UA(1) symmetry
Abstract
We present an update on our ongoing study on the nature of the bulk transition observed at strong coupling in the SU(3) gauge theory with Nf = 12 flavors in the fundamental representation. We show evidence that there is a first order chiral symmetry breaking bulk transition separating a region at weak coupling where chiral symmetry is restored from a region at strong coupling where chiral symmetry is broken. We also discuss hints of a separate partial restoration of UA(1) at weaker coupling. The results are in agreement with restoration of conformality in non abelian gauge theories as the number of flavors is increased.
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