Remarks on the discretization of physical momenta in lattice QCD

Details Remarks on the discretization of physical momenta in lattice QCD Remarks on the discretization of physical momenta in lattice QCD

2004-09-10

arxiv.org/abs/hep-lat/0409037v1

Physics

High Energy Physics

High Energy Physics - Lattice

3 pages, 2 figures, Talk presented at Lattice2004(spectrum)

Scientific paper

10.1016/j.nuclphysbps.2004.11.20

The calculation on the lattice of cross--sections, form--factors and decay rates associated to phenomenologically relevant physical processes is complicated by the spatial momenta quantization rule arising from the introduction of limited box sizes in numerical simulations. A method to overcome this problem, based on the adoption of two distinct boundary conditions for two fermions species on a finite lattice, is here discussed and numerical results supporting the physical significance of this procedure are shown.

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