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On the nature of the residual meson-meson interaction from simulations with a QED2+1 model

H. R. Fiebig, O. Linsuain, H. Markum, K. Rabitsch

hep-latarXiv:hep-lat/9508022

Abstract

A potential between mesons is extracted from 4-point functions within lattice gauge theory taking 2+1 dimensional QED as an example. This theory possesses confinement and dynamical fermions. The resulting meson-meson potential has a short-ranged hard repulsive core and the expected dipole-dipole forces lead to attraction at intermediate distances. Sea quarks lead to a softer form of the total potential.

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