Forces between composite particles in QCD

H.R. Fiebig (Physics Department , FIU , Miami) , A. Mihaly (Department of Theoretical Physics , Lajos Kossuth University , Debrecen) , H. Markum , K. Rabitsch (Institut f. Kernphysik

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Vienna University of Technology)

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classification ✦ hep-lat

keywords potentialsactionattractivecalculatecomparisoncompositedimensionalemploy

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Starting from the meson-meson Green function in 3+1 dimensional quenched lattice QCD we calculate potentials between heavy-light mesons for various light-quark mass parameters. For the valence quarks we employ the staggered scheme. The resulting potentials turn out to be short ranged and attractive. A comparison with a tadpole improved action for the gauge fields is presented.

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Forces between composite particles in QCD

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