Meson-meson interactions -- from static to dynamic valence quarks

Details Meson-meson interactions -- from static to dynamic valence quarks Meson-meson interactions -- from static to dynamic valence quarks

1995-10-19

arxiv.org/abs/hep-lat/9510032v3

Nucl.Phys.Proc.Suppl. 47 (1996) 394-397

Physics

High Energy Physics

High Energy Physics - Lattice

4 pages, uuencoded gziped postscript file, contribution to LATTICE'95, Melbourne, Australia (list of authors completed)

Scientific paper

10.1016/0920-5632(96)00081-3

A method for the extraction of an effective meson-meson potential from Green functions, which can be obtained from a lattice simulation, is presented. Simulations are carried out for compact QED and QCD in four dimensions using the quenched approximation and the hopping parameter expansion. In a further study, a heavy-light meson is considered employing a conjugate gradient algorithm for the light propagators. Due to the Pauli exclusion principle, the results for QED indicate the existence of a hard core, but for QCD there is strong attraction at small meson distances.

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