Glueballs and topology with O(a)-improved lattice QCD
High Energy Physics - Lattice
2015-06-25 v1
Abstract
We present evidence for unquenching effects in N_f=2, 16^3 32 ensembles by comparing with `equivalent' quenched data at r_0~5.0. A (small) VEV for torelons signals (weak) string breaking. A 15-20 % reduction in the scalar glueball mass relative to quenched is argued to be (in part at least) a discretisation effect. We find a chiral suppression of the topological susceptibility consistent with expectations, and agreement between fermionic and gluonic methods for measuring the topological charge.
Keywords
Cite
@article{arxiv.hep-lat/0110167,
title = {Glueballs and topology with O(a)-improved lattice QCD},
author = {A. Hart},
journal= {arXiv preprint arXiv:hep-lat/0110167},
year = {2015}
}
Comments
4pp LaTeX, 4 EPS figures. Contribution to Lattice2001(confinement)