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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
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Abstract

The hadron mass spectrum is calculated in lattice QCD using a novel fat-link clover fermion action in which only the irrelevant operators of 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 O(a) improvement.

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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. 2002-01-04. Novel fat-link fermion actions. https://doi.org/10.1016/s0920-5632(02)01397-x

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