QCD thermodynamics: an overview of recent progress

Abstract

Recent results from lattice simulations of QCD at nonzero temperature and/or density and/or in presence of magnetic fields are reviewed. Progress in our understanding of the phases and boundaries in the phase diagram, as well as on the calculation of thermodynamic quantities with relevant phenomenological consequences are discussed.

Extracting Instantons from the Lattice

“…Recently, there has been evidence for two topological phenomena: the first is crystals ( [6,13,14], and the second is complex autocorrelation oscillations. The latter AC oscillations appear as harmonic oscillations in the MC time 𝜏 (configuration number).…”

A New Way to Compute the Pseudoscalar Screening Mass at Finite Chemical Potential

“…The system created in these experiments has been found to be stronglycoupled, hence a non-perturbative approach is required for its study [1]. For small baryochemical potentials 𝜇 𝐵 , such an approach is provided by lattice QCD despite the presence of the sign problem [2]. At larger 𝜇 𝐵 however, the sign problem becomes much more severe due to which the calculation breaks down [3,4].…”