Anatomy of the sign-problem in heavy-dense QCD

Garron, N ORCID: 0000-0002-4428-3984 and Langfeld, K ORCID: 0000-0002-4368-3580 (2016) Anatomy of the sign-problem in heavy-dense QCD. European Physical Journal C: Particles and Fields, 76 (10).

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Official URL: https://link.springer.com/article/10.1140%2Fepjc%2...

Abstract

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
Uncontrolled Keywords:	Partition Function, Heavy Quark, Quantum Chromo Dynamic, Heavy Quark Mass, Fixed Point Iteration
Depositing User:	Symplectic Admin
Date Deposited:	18 Oct 2016 10:58
Last Modified:	19 Jan 2023 07:29
DOI:	10.1140/epjc/s10052-016-4412-2
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3003786