Two-loop evaluation of large Wilson loops with overlap fermions: the b-quark mass shift, and the quark-antiquark potential

Details Two-loop evaluation of large Wilson loops with overlap fermions: the b-quark mass shift, and the quark-antiquark potential Two-loop evaluation of large Wilson loops with overlap fermions: the b-quark mass shift, and the quark-antiquark potential

2005-09-14

arxiv.org/abs/hep-lat/0509044v1

PoS LAT2005 (2005) 228

Physics

High Energy Physics

High Energy Physics - Lattice

6 pages, 9 figures, presented at the conference Lattice2005(renormalization and improvement). A longer write-up may be found

Scientific paper

We compute, to two loops in pertubation theory, the fermionic contribution to rectangular RxT Wilson loops, for different values of R and T. We use the overlap fermionic action. We also employ the clover action, for comparison with existing results in the literature. In the limit R, T -> Infinity our results lead to the shift in the b-quark mass. We also evaluate the perturbative static potential as T -> Infinity.

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