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arXiv · 1701.03228

Symmetry restoration at high-temperature in two-color and two-flavor lattice gauge theories

Jong-Wan Lee·Biagio Lucini·Maurizio Piai
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Abstract

We consider the $SU(2)$ gauge theory with $N_f=2$ 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.

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Jong-Wan Lee, Biagio Lucini, Maurizio Piai. 2017-03-29. Symmetry restoration at high-temperature in two-color and two-flavor lattice gauge theories. https://doi.org/10.1007/jhep04(2017)036

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