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Parity doubling in two-flavor SU(2) at high temperature

Jong-Wan Lee, Biagio Lucini, Maurizio Piai Orcid Logo

Pos(Lattice2016)080

Swansea University Author: Maurizio Piai Orcid Logo

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Abstract

We study the mass spectrum of mesons at high temperature in SU(2) gauge theory with two flavorsof Dirac fundamental fermions. Numerical simulations are carried out on anisotropic latticesusing Wilson fermions, with lattice parameters tuned so that Euclidean symmetry is restored atlow energy. We dete...

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Published in: Pos(Lattice2016)080
ISSN: 1824-8039
Published: 2017
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa32042
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Abstract: We study the mass spectrum of mesons at high temperature in SU(2) gauge theory with two flavorsof Dirac fundamental fermions. Numerical simulations are carried out on anisotropic latticesusing Wilson fermions, with lattice parameters tuned so that Euclidean symmetry is restored atlow energy. We determine the pseudo-critical temperature Tc using renormalized Polyakov loops.We calculate temporal and spatial meson correlation functions across Tc, and observe a clear signof parity doublings above Tc in both vector and scalar channels. The degeneracy between paritypartners in the spectrum indicates that the enhanced SU(4)U(1)A global symmetry of the modelis restored at high temperature.
College: College of Science