arXiv:hep-lat/0110216·v3·High Energy Physics — Lattice
Hadron Masses From Novel Fat-Link Fermion Actions
J. M. Zanotti🇦🇺 · S. Bilson-Thompson🇦🇺 · F. D. R. Bonnet🇦🇺 · P. D. Coddington🇦🇺 · D. B. Leinweber🇦🇺 · A. G. Williams🇦🇺 · J. B. Zhang🇦🇺 · W. Melnitchouk🇦🇺 · F. X. Lee🇺🇸
Abstract
The hadron mass spectrum is calculated in lattice QCD using a novel fat-link clover fermion action in which only the irrelevant operators in the fermion action are constructed using smeared links. The simulations are performed on a 16^3 x 32 lattice with a lattice spacing of a=0.125 fm. We compare actions with n=4 and 12 smearing sweeps with a smearing fraction of 0.7. The n=4 Fat-Link Irrelevant Clover (FLIC) action provides scaling which is superior to mean-field improvement, and offers advantages over nonperturbative 0(a) improvement, including a reduced exceptional configuration problem.
Comments: 12 pages, 4 figures, new simulation with mean-field improved clover, further discussion of action