Magnetic Susceptibility of Strongly Interacting Matter across the Deconfinement Transition

Abstract

We propose a method to determine the total magnetic susceptibility of strongly interacting matter by lattice QCD simulations, and present first numerical results for the theory with two light flavors, which suggest a weak magnetic activity in the confined phase and the emergence of strong paramagnetism in the deconfined, Quark-Gluon Plasma phase.

Comments: 6 pages, 6 figures, 2 tables. Final version published in Physical Review Letters