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Type: Journal article
Title: Hadron masses from novel fat-link fermion actions
Author: Zanotti, J.
Bilson-Thompson, S.
Bonnet, F.
Coddington, P.
Leinweber, D.
Williams, A.
Zhang, J.
Melnitchouk, W.
Lee, F.
Citation: Physical Review D: Particles, Fields, Gravitation and Cosmology, 2002; 65(7):074507-1-074507-6
Publisher: American Physical Soc
Issue Date: 2002
ISSN: 1550-7998
Statement of
J. M. Zanotti, S. Bilson-Thompson, F. D. R. Bonnet, P. D. Coddington, D. B. Leinweber, A. G. Williams, J. B. Zhang, W. Melnitchouk and 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 16³×32 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 O(a) improvement, including a reduced exceptional configuration problem.
Rights: ©2002 American Physical Society
DOI: 10.1103/PhysRevD.65.074507
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