Scattering from generalised lattice φ4 theory
Abstract
We investigate numerically different techniques to extract scattering amplitudes from the Euclidean Lattice φ4 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 (cf 10.1007/JHEP06(2021)043), and a study of the two- and three-particle quantization condition.
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