Interface tension in quenched QCD

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 of the QCDPAX Collaboration. The results are [sigma]/[ital T][sub [ital c]][sup 3]=0.0292(22) and 0.0218(33) for [ital N][sub [ital t]]=4 and 6, respectively. The ratio [sigma]/[ital T][sub [ital c]][sup 3] shows a scaling violation similar to that already observed for the latent heat [ital L]. However, we find that the physically interesting dimensionless combinations ([sigma][sup 3]/[ital L][sup 2][ital T])[sup 1/2] and [sigma][ital T]/[ital L] scale within the statistical errors.