Deconfinement transition line with the Complex Langevin equation up to $\mu /T \sim 5$

Understand

We study the deconfinement transition line in QCD for quark chemical potentials up to $\mu_q \sim 5 T$ ($\mu_B \sim 15 T$).

• To circumvent the sign problem we use the complex Langevin equation with gauge cooling.
• The plaquette gauge action is used with two flavors of naive Wilson fermions at a relatively heavy pion mass of roughly 1.3 GeV.
• A quadratic dependence describes the transition line well on the whole chemical potential range.