Oscillating propagators in heavy-dense QCD

TL;DR

This paper demonstrates that a 3D Z_3 spin model, used as a proxy for heavy-dense QCD, exhibits non-monotonic spatial correlators linked to complex mass spectra, suggesting a liquid-like phase with potential experimental implications.

Contribution

It shows non-monotonic correlators in a Z_3 spin model as a proxy for heavy-dense QCD, revealing complex mass spectra and liquid-like behavior.

Findings

Non-monotonic spatial correlators observed in the model.

Correlation with complex mass spectrum and liquid-like phase.

Potential implications for heavy-ion collision experiments.

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.