Complex Langevin dynamics for dynamical QCD at nonzero chemical potential: A comparison with multiparameter reweighting

Z. Fodor, S. D. Katz, D. Sexty, C. Török

Research output: Contribution to journalArticlepeer-review

Abstract

We study lattice QCD at nonvanishing chemical potential using the complex Langevin equation. We compare the results with multiparameter reweighting both from μ=0 and phase-quenched ensembles. We find a good agreement for lattice spacings below ≈0.15 fm. On coarser lattices the complex Langevin approach breaks down. Four flavors of staggered fermions are used on Nt=4, 6 and 8 lattices. For one ensemble we also use two flavors to investigate the effects of rooting.

Original languageEnglish (US)
Article number094516
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume92
Issue number9
DOIs
StatePublished - Nov 24 2015

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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