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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Lee, JW., Lucini, B. & Piai, M. Symmetry restoration at high-temperature in two-color and two-flavor lattice gauge theories. J. High Energ. Phys. 2017, 36 (2017). https://doi.org/10.1007/JHEP04(2017)036
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DOI: https://doi.org/10.1007/JHEP04(2017)036