We generalize Gaussian/Wuppertal smearing in order to produce non-spherical wave functions. We show that we can achieve a reduction in the noise-to-signal ratio for correlation functions of certain hadrons at non-zero momentum, while at the same time preserving a good projection on the ground state.
Cite
@article{arxiv.1208.0189,
title = {Improved interpolating fields for hadrons at non-zero momentum},
author = {Michele Della Morte and Benjamin Jaeger and Thomas Rae and Hartmut Wittig},
journal= {arXiv preprint arXiv:1208.0189},
year = {2015}
}
Comments
10 pages, 7 figures. Version accepted for publication in EPJ A