Multi-hadron states in Lattice QCD spectroscopy

Details Multi-hadron states in Lattice QCD spectroscopy Multi-hadron states in Lattice QCD spectroscopy

2010-03-10

arxiv.org/abs/1003.2154v1

Physics

High Energy Physics

High Energy Physics - Lattice

5 pages, 3 figures, talk given at Hadron 2009, Tallahassee, Florida, December 1, 2009

Scientific paper

The ability to reliably measure the energy of an excited hadron in Lattice QCD simulations hinges on the accurate determination of all lower-lying energies in the same symmetry channel. These include not only single-particle energies, but also the energies of multi-hadron states. This talk deals with the determination of multi-hadron energies in Lattice QCD. The group-theoretical derivation of lattice interpolating operators that couple optimally to multi-hadron states is described. We briefly discuss recent algorithmic developments which allow for the efficient implementation of these operators in software, and present numerical results from the Hadron Spectrum Collaboration.

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