Quantum Chromodynamics (QCD) is the fundamental field theory governing the strong interactions among particles. Understanding its non-perturbative dynamics from first principles necessitates numerical simulations on the lattice.
This project seeks to measure the mesonic non-singlet screening masses projected onto the first non-zero Matsubara frequency across a previously-unexplored temperature range, from 1 GeV to 160 GeV, with sub-percent accuracy in the continuum limit. Besides its intrinsic physics significance, this endeavour will offer additional insights into the reliability of next-to-leading order perturbation theory up to the electroweak scale. In this initiative, formulation of a thermal quantum theory is used in a moving reference frame.
This approach has been extensively employed in recent publications that are setting the standard for Monte Carlo studies at very high temperatures. The outcomes of this study will illuminate various properties of the quark-gluon plasma. It expands the work done on the static sector of mesonic screening masses [1] and the ongoing work on baryonic screening masses. Together with these works it will broaden our understanding of the hadronic screening spectrum in the high-temperature realm of QCD.
Marco Cè, Università degli Studi di Milano-Bicocca, Italy