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Symmetry restoration at high-temperature in two-color and two-flavor lattice gauge theories / Jong-Wan Lee; Biagio Lucini; Maurizio Piai

Journal of High Energy Physics, Volume: 2017, Issue: 4

Swansea University Author: Lucini, Biagio

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Abstract

We consider the SU(2) gauge theory with Nf=2 flavors of Dirac fundamental fermions. We study the high-temperature behavior of the spectra of mesons, discretizing the theory on anisotropic lattices, and measuring the two-point correlation functions in the temporal direction as well as screening masse...

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Published in: Journal of High Energy Physics
ISSN: 1029-8479
Published: 2017
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa32965
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Abstract: We consider the SU(2) gauge theory with Nf=2 flavors of Dirac fundamental fermions. We study the high-temperature behavior of the spectra of mesons, discretizing the theory on anisotropic lattices, and measuring the two-point correlation functions in the temporal direction as well as screening masses in various channels. We identify the (pseudo-)critical temperature as the temperature at which the susceptibility associated with the Polyakov loop has a maximum. At high temperature both the spin-1 and spin-0 sectors of the light meson spectra exhibit enhanced symmetry properties, indicating the restoration of both the global SU(4) and the axial U(1)A symmetries of the model.
Keywords: Global Symmetries, Lattice Quantum Field Theory, Quark-Gluon Plasma, Technicolor and Composite Models
College: College of Science
Issue: 4