New extended interpolating operators made of quenched three dimensional fermions are introduced in the context of lattice QCD. The mass of the 3D fermions can be tuned in a controlled way to find a better overlap of the extended operators with the states of interest. The extended operators have good renormalisation properties and are easy to control when taking the continuum limit. Moreover the short distance behaviour of the two point functions built from these operators is greatly improved. The operators have been numerically implemented and a comparison to point sources and Jacobi smeared sources has been performed on the new CLS configurations.
@article{arxiv.1612.07737,
title = {New extended interpolating operators for hadron correlation functions},
author = {Francesco Scardino and Mauro Papinutto and Stefan Schaefer},
journal= {arXiv preprint arXiv:1612.07737},
year = {2016}
}
Comments
7 pages, 8 figures. Poster presented at the 34th annual International Symposium on Lattice Field Theory, july 24-30 2016, University of Southampton, Southampton, U.K. PoS LATTICE2016 (2016)