Oscillating propagators in heavy-dense QCD

Abstract

Using Monte Carlo simulations and extended mean field theory calculations we show that the $3$-dimensional $Z_3$ spin model with complex external fields has non-monotonic spatial correlators in some regions of its parameter space. This model serves as a proxy for heavy-dense QCD in $(3+1)$ dimensions. Non-monotonic spatial correlators are intrinsically related to a complex mass spectrum and a liquid-like (or crystalline) behavior. A liquid phase could have implications for heavy-ion experiments, where it could leave detectable signals in the spatial correlations of baryons.

16 pages, 9 figures, updated to match published version

References in corpus (2)

• Worm algorithms for the 3-state Potts model with magnetic field and chemical potential
• Sampling of General Correlators in Worm Algorithm-based Simulations

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• Spatially oscillating correlation functions in $\left(2+1\right)$-dimensional four-fermion models: The mixing of scalar and vector modes at finite density
• Spin models in complex magnetic fields: a hard sign problem