Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
2002-09-25
Nucl.Phys.Proc.Suppl.119:828-830,2003
Physics
High Energy Physics
High Energy Physics - Lattice
Lattice2002(chiral)
Scientific paper
10.1016/S0920-5632(03)80473-5
APE smearing the links in the irrelevant operators of clover fermions (Fat-Link Irrelevant Clover (FLIC) fermions) provides significant improvement in the condition number of the Hermitian-Dirac operator and gives rise to a factor of two savings in computing the overlap operator. This report investigates the effects of using a highly-improved definition of the lattice field-strength tensor F_mu_nu in the fermion action, made possible through the use of APE-smeared fat links in the construction of the irrelevant operators. Spurious double-zero crossings in the spectral flow of the Hermitian-Wilson Dirac operator associated with lattice artifacts at the scale of the lattice spacing are removed with FLIC fermions composed with an O(a^4)-improved lattice field strength tensor. Hence, FLIC-Overlap fermions provide an additional benefit to the overlap formalism: a correct realization of topology in the fermion sector on the lattice.
Kamleh Waseem
Kusterer Daniel-Jens
Leinweber Derek B. .
Williams Anthony G.
No associations
LandOfFree
FLIC-Overlap Fermions and Topology does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with FLIC-Overlap Fermions and Topology, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and FLIC-Overlap Fermions and Topology will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-366625