Improved convergence of Complex Langevin simulations

Preprint number: CP3-Origins-2017-43 DNRF90
Authors: Felipe Attanasio (University of Washington & Swansea University) and Benjamin Jaeger (CP3-Origins & DIAS)

Share this pageShare on FacebookTweet about this on TwitterShare on LinkedInGoogle+

The sign problem appears in lattice QCD as soon as a non-zero chemical potential is introduced. This prevents direct simulations to determine the
phase structure of the strongly interacting matter. Complex Langevin methods have been
successfully used for various models or approximations of QCD. However, in some scenarios it converges to incorrect results. We present developments of our new method that
helps to improve the convergence by keeping the system closer to the SU(3) manifold
and discuss preliminary tests and results.