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.
@article{arxiv.1003.2154,
title = {Multi-hadron states in Lattice QCD spectroscopy},
author = {J. Foley and J. Bulava and K. J. Juge and C. Morningstar and M. Peardon and C. H. Wong},
journal= {arXiv preprint arXiv:1003.2154},
year = {2015}
}
Comments
5 pages, 3 figures, talk given at Hadron 2009, Tallahassee, Florida, December 1, 2009