Hadron Masses From Novel Fat-Link Fermion Actions

Journal Article · Thu Nov 01 00:00:00 EST 2001 · Phys. Rev. D 65, 074507 (2002)

OSTI ID:789469

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, including a reduced exceptional configuration problem.

• 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: 789469
• Report Number(s): JLAB-THY-01-32; DOE/ER/40150-1964; hep-lat/0110216; ADP-01-39/T471; TRN: US0200931
• Journal Information: Phys. Rev. D 65, 074507 (2002), Other Information: No journal information given for this preprint; PBD: 1 Nov 2001; PBD: 1 Nov 2001
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CLOVER
CONFIGURATION
FERMIONS
HADRONS
QUANTUM CHROMODYNAMICS