Phase structure of SU(3) gauge theory with two flavors of symmetric-representation fermions

Thomas DeGrand, Yigal Shamir, Benjamin Svetitsky

Research output: Contribution to journalArticlepeer-review

Abstract

We have performed numerical simulations of SU(3) gauge theory coupled to Nf=2 flavors of symmetric-representation fermions. The fermions are discretized with the tadpole-improved clover action. Our simulations are done on lattices of length L=6, 8, and 12. In all simulation volumes we observe a crossover from a strongly coupled confined phase to a weak-coupling deconfined phase. Degeneracies in screening masses, plus the behavior of the pseudoscalar decay constant, indicate that the deconfined phase is also a phase in which chiral symmetry is restored. The movement of the confinement transition as the volume is changed is consistent with avoidance of the basin of attraction of an infrared fixed point of the massless theory.

Original languageEnglish
Article number034501
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume79
Issue number3
DOIs
StatePublished - 2 Feb 2009

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