Speaker
Description
Novel algorithmic developments have made it possible to perform efficient simulations of Lattice QCD at temperatures spanning up to the Electroweak scale. In this talk, I will present recent results on screening masses in several mesonic channels, for both static and non-static Matsubara sectors, obtained at 12 temperature values from 1 GeV up to 165 GeV. For each temperature, 3 or 4 lattice spacings are considered in order to confidently perform the continuum limit. A comparison of the available perturbative expansion with our high-precision results reveal significant discrepancies, and in some cases relevant non-perturbative contributions, up to the highest temperatures explored. The restoration of chiral symmetry in the explored temperature range is also discussed.