Complex Langevin: Boundary terms and application to QCD

Abstract

We employ the Complex Langevin method for simulation of complex-valued actions. First, we show how to test for convergence of the method by explicitely computing boundary terms and demonstrate this in a model. Then we investigate the deconfinement phase transition of QCD with $N_f=2$ Wilson-fermions using the Complex Langevin Method and. We give preliminary results for the transition temperatures up to $\mu /T_c(\mu =0)\approx 5$ and compute the curvature coefficient ${\kappa }_2$.

Comments: Proceedings for The 36th Annual International Symposium on Lattice Field Theory - LATTICE2018; update: added some acknowledgements