Interface Tension in Quenched QCD

TL;DR

This paper calculates the interface tension between confined and deconfined phases in SU(3) lattice gauge theory, revealing scaling behaviors and violations at different lattice sizes using high-statistics data.

Contribution

It provides high-precision measurements of interface tension in quenched QCD and analyzes their scaling properties across different lattice sizes.

Findings

Measured interface tension values for N_t=4 and 6.

Observed scaling violation in $\sigma/T_c^3$.

Identified scaling within certain dimensionless combinations.

Abstract

We calculate the tension $\sigma$ of the interface between the confined and deconfined phases by the histogram method in SU(3) lattice gauge theory for temporal extents of 4 and 6 using the recent high-statistics data by QCDPAX collaboration. The results are $\sigma/T_c^3 = 0.0292(22)$ and 0.0218(33) for $N_t=4$ and 6, respectively. The ratio $\sigma/T_c^3$ shows a scaling violation similar to that already observed for the latent heat $\latent$. However, we find that the physically interesting dimensionless combinations $(\sigma^{3}/\latent^2 T)^{1/2}$ and $\sigma T/ \latent$ scale within the statistical errors.