Flux-tube structure in finite temperature QCD

Abstract

We present a study of the structure of the chromoelectrical field created by a static quark-antiquark pair in lattice QCD with 2+1 flavours of dynamical quarks, where the quark masses are set to their physical values. The analysis covers a wide range of temperatures both above and below the chiral crossover, and explores varying quark-antiquark distances, with the aim of identifying signals of deconfinement and string breaking in the field structure. To this end we apply the zero-curl perturbative field subtraction method, developed in our earlier studies of pure gauge SU(3) theory and of full QCD at zero temperature.

Comments: 9 pages, 6 figures, talk presented at 21st International Conference on QCD in Extreme Conditions (XQCD 2025), July 2nd - July 4th 2025, University of Wrocław, Wrocław, Poland