Two-particle wave function in four dimensional Ising model

Abstract

An exploratory study of two-particle wave function is carried out with a four dimensional simple model. The wave functions not only for two-particle ground and first excited states but also for an unstable state are calculated from three- and four-point functions using the diagonalization method suggested by Lüscher and Wolff. The scattering phase shift is evaluated from these wave functions.

Comments: Poster presented at Lattice2004(spectrum), Fermilab, June 21-26, 2004