期刊
PHYSICAL REVIEW D
卷 90, 期 11, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.90.114505
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资金
- Bundesministerium fur Bildung und Forschung (Ministry for Education and Research)
- Ministerium fur Wissenschaft, Forschung und Kunst Baden-Wurttemberg (Ministry for Science, Research and Arts Baden-Wuerttemberg)
- Deutsche Forschungsgemeinschaft
- Science and Technology Facilities Council
- Royal Society
- Wolfson Foundation
- Leverhulme Trust
- Science and Technology Facilities Council [ST/J00040X/1, PPA/A/R/2003/00278] Funding Source: researchfish
- STFC [ST/J00040X/1] Funding Source: UKRI
Progress in simulating QCD at nonzero baryon density requires, among other things, substantial numerical effort. Here we propose two different expansions to all orders in the hopping parameter, preserving the full Yang-Mills action, which are much cheaper to simulate. We carry out simulations using complex Langevin dynamics, both in the hopping expansions and in the full theory, for two flavors of Wilson fermions, and agreement is seen at sufficiently high order in the expansion. These results provide support for the use of complex Langevin dynamics to study QCD at nonzero density, both in the full and the expanded theory, and for the convergence of the latter.
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