Progress in complex Langevin simulations of full QCD at nonzero density

Abstract

Progress in the application of the complex Langevin method to full QCD at non-zero chemical potential is reported. The method evades the sign problem which makes naive simulations at nonzero density impossible. The procedure 'gauge cooling' is used to stabilize the simulations at small enough lattice spacings. The method allows simulations also at high densities, all the way up to saturation. Simulations in a systematic hopping parameter expansion are also performed and good convergence is observed, validating the full as well as the expanded simulations.

4 pages, 5 figures, contribution to the proceedings of Quark Matter 2014

References in corpus (7)

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Cited by in corpus (5)

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• Towards overcoming the Monte Carlo sign problem with tensor networks
• Spectral Functions in V-QCD with Matter: Masses, Susceptibilities, Diffusion and Conductivity
• Recent lattice QCD results and phase diagram of strongly interacting matter
• Effective SU(2) Polyakov Loop Theories with Heavy Quarks on the Lattice