Intrinsic Width of the flux tube in 2+1 dimensional Yang-Mills theories

Abstract

We present our updated results on the intrinsic width of the profile of the flux tube in (2+1)-dimensional Yang-Mills theory with SU(2) gauge group. We identify the intrinsic width as the characteristic length scale of the exponentially decaying tails of the profile of the flux tube. Inspecting a broad range of temperature, we check that this length does not depend on the length of the flux tube. Our estimations of the intrinsic width show a constant value at low temperature and a growing trend approaching the deconfinement temperature that can be understood from the universality class of the phase transition via the Svetitsky-Yaffe mapping.

Comments: 10 pages, 5 figures, 1 table, Proceedings of 42nd International Symposium on Lattice Field Theory (LATTICE2025), November 2-8 2025, TIFR, Mumbai, India