Anatomy of the sign-problem in heavy-dense QCD

Garron, Nicolas, Langfeld, Kurt, Bechtle, P, Beck, HP, Becker, K, Becker, M, Beckingham, M, Becot, C, Beddall, AJ, Beddall, A
et al (show 2676 more authors) (2016) Anatomy of the sign-problem in heavy-dense QCD. EUROPEAN PHYSICAL JOURNAL C, 76 (10). pp. 1-29.

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QCD at finite densities of heavy quarks is investigated using the density-of-states method. The phase factor expectation value of the quark determinant is calculated to unprecedented precision as a function of the chemical potential. Results are validated using those from a reweighting approach where the latter can produce a significant signal-to-noise ratio. We confirm the particle-hole symmetry at low temperatures, find a strong sign problem at intermediate values of the chemical potential, and an inverse Silver Blaze feature for chemical potentials close to the onset value: here, the phase quenched theory underestimates the density of the full theory.

Item Type: Article
Additional Information: 15 pages, 16 figures
Uncontrolled Keywords: hep-lat, hep-lat, hep-ph, hep-th
Depositing User: Symplectic Admin
Date Deposited: 21 Aug 2017 06:41
Last Modified: 19 Jan 2023 06:57
DOI: 10.1140/epjc/s10052-016-4412-2
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