Quenched QCD at finite density: $g=1$ and $g=\infty$

TL;DR

This paper investigates quenched lattice QCD at finite density, revealing its sensitivity to baryon mass and pathological behavior at high chemical potential, consistent with previous analyses.

Contribution

It provides new insights into the behavior of quenched QCD at finite density, especially at strong coupling and in the scaling region, highlighting its limitations.

Findings

Quenched QCD is sensitive to baryon mass at strong coupling.

Pathological behavior occurs for chemical potential > m_pi/2 at beta=6.0.

Results agree with previous Lanczos analyses of the Dirac operator.

Abstract

We report on our ongoing effort to understand quenched lattice QCD at finite baryon number density. The quenched theory is sensitive to the baryon mass both at strong coupling and in the scaling region. However, we find that the quenched model is pathological for $\mu > m_\pi/2$ at $\beta= 6.0$, in agreement with past Lanczos analyses of the Dirac operator.