A Variational Study of the Nucleon Wavefunction

Details A Variational Study of the Nucleon Wavefunction A Variational Study of the Nucleon Wavefunction

2008-10-10

arxiv.org/abs/0810.1954v1

PoS LATTICE2008:153,2008

Physics

High Energy Physics

High Energy Physics - Lattice

7 pages, 8 figures; talk presented at the XXVI International Symposium on Lattice Field Theory, July 14 - 19, 2008, Williamsbu

Scientific paper

The structure of the nucleon is studied variationally on the lattice by maximizing the overlap between the nucleon and a trial function generated by an interpolating field containing variational parameters. We examine the effect of the spatial extent of smeared quark sources, the degree of gauge field smearing, the positions of smeared quark sources, inclusion of lower Dirac components and of diquark substructure. Exploratory calculations with quenched Wilson fermions at a pion mass of 900 MeV achieved overlaps as high as 80%, and there was no evidence of diquark substructure.

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