Hadron Masses From Novel Fat-Link Fermion Actions

Details Hadron Masses From Novel Fat-Link Fermion Actions Hadron Masses From Novel Fat-Link Fermion Actions

2001-10-30

arxiv.org/abs/hep-lat/0110216v3

Phys.Rev.D65:074507,2002

Physics

High Energy Physics

High Energy Physics - Lattice

12 pages, 4 figures, new simulation with mean-field improved clover, further discussion of action

Scientific paper

10.1103/PhysRevD.65.074507

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.

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