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Meson-Meson Scattering in Lattice QED2+1

H. R. Fiebig, R. M. Woloshyn

hep-latarXiv:hep-lat/9210036

Abstract

Scattering phase shifts of a meson-meson system in staggered 3-dimensional lattice QED are computed. The main task of the simulation is to obtain a discrete set of two-body energy levels. These are extracted from a 4-point time correlation matrix and then used to obtain scattering phase shifts. The results for the l=0 and l=2 partial waves are consistent with short- range repulsion and intermediate-range attraction of the residual meson- meson interaction.

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