Computing Masses and Surface Tension from Effective Transfer Matrices

Abstract

We propose an effective transfer-matrix method that allows a measurement of tunnelling correlation lengths that are orders of magnitude larger than the lattice extension. Combining this method with a particularly efficient implementation of the multimagnetical algorithm we were able to determine the interface tension of the 3D Ising model close to criticality with a relative error of less than 1 per cent.

Comments: contribution to the proceedings of LATTICE 93, 3 pages, PostScript file, preprints CERN-TH.7117/93, IUHET-266