Computing Masses and Surface Tension from Effective Transfer Matrices

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.

M. Hasenbusch, K. Rummukainen, K. Pinn · 1993