New critical point for QCD in a magnetic field

Thomas D. Cohen, Naoki Yamamoto

Published 2013-10-08, updated 2014-04-03Version 3

We provide a general argument for the possible existence of a new critical point associated with a deconfinement phase transition in QCD at finite temperature $T$ and in a magnetic field $B$ with zero chemical potential. This is the first example of a QCD critical point in a physical external parameter region that can be studied using lattice QCD simulations without suffering from a sign problem.