Scattering from generalised lattice $ϕ^4$ theory

Abstract

We investigate numerically different techniques to extract scattering amplitudes from the Euclidean Lattice 𝜙 4 theory with two fields, having different masses. We present an exploratory study of the recently proposed method by Bruno and Hansen for extracting the scattering length from a four-point function [1], and a study of the two-and three-particle quantization condition.