Phase Shift with LapH Propagators

Details Phase Shift with LapH Propagators Phase Shift with LapH Propagators

2010-11-24

arxiv.org/abs/1011.5277v1

PoS Lattice2010:110,2010

Physics

High Energy Physics

High Energy Physics - Lattice

7 pages, 2 figures, Talk presented at 28th International Symposium On Lattice Field Theory (Lattice 2010) 13-19 Jun 2010, Vill

Scientific paper

The pion-pion scattering phase shift is computed using LapH propagators. The LapH method for computing quark propagators is used to form two-particle correlation functions with a number of different operators. Excited state energies of two-particle states on 2+1 dynamical, anisotropic lattices (Mpi=390 MeV) are computed to determine the phase shift in the isospin-2 channel. The signal for t-to-t diagrams for the isospin-0 channel are also presented to demonstrate the efficacy of the stochastic LapH method which combines LapH with diluted Z4 noise sources.

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