Complex Langevin: Boundary terms and application to QCD

Manuel Scherzer; Erhard Seiler; Dénes Sexty; Ion-Olimpiu Stamatescu

paper

Complex Langevin: Boundary terms and application to QCD

arXiv:1810.09713

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 $μ / T_{c} (μ = 0) \approx 5$ and compute the curvature coefficient $κ_{2}$ .

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