Novel Fat-Link Fermion Actions

Conference · Sun Jul 01 00:00:00 EDT 2001

OSTI ID:789643

Zanotti, J M; Bilson-Thompson, S; R Bonnet, F D; Coddington, P D; Leinweber, D B; Williams, A G; Zhang, J B; Melnitchouk, W; Lee, F X

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{sup 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.

• Research Organization: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
• Sponsoring Organization: USDOE Office of Energy Research (ER) (US)
• DOE Contract Number: AC05-84ER40150
• OSTI ID: 789643
• Report Number(s): JLAB-THY-01-41; DOE/ER/40150-1971; ADP-01-54/T486; TRN: US0200195
• Resource Relation: Conference: Proceedings of Workshop on Lattice Hadron Physics, Cairns (AU), 07/09/2001--07/18/2001; Other Information: PBD: 1 Jul 2001
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
FERMIONS
QUANTUM CHROMODYNAMICS
MASS SPECTRA
HADRONS