Exploring the phase diagram of QCD with complex Langevin simulations

Understand

Simulations of QCD with a finite chemical potential typically lead to a severe sign problem, prohibiting any standard Monte Carlo approach.

• Complex Langevin simulations provide an alternative to sample path integrals with oscillating weight factors and therefore potentially enable the determination of the phase diagram of QCD.
• Here we present results for QCD in the limit of heavy quarks and show evidence that the phase diagram can be mapped out by direct simulation.
• We apply adaptive step-size scaling and adaptive gauge cooling to ensure the convergence of these simulations.