One-loop renormalization of fermionic currents with the overlap-Dirac operator

Details One-loop renormalization of fermionic currents with the overlap-Dirac operator One-loop renormalization of fermionic currents with the overlap-Dirac operator

2000-02-10

arxiv.org/abs/hep-lat/0002010v2

Nucl.Phys.B580:394-406,2000

Physics

High Energy Physics

High Energy Physics - Lattice

14 pages, LATeX with 2 PS figure files. One further reference on the axial anomaly has been added; no other changes. Nuclear P

Scientific paper

10.1016/S0550-3213(00)00190-5

We compute the one-loop lattice renormalization of the two-quark operators $\bar{\psi} \Gamma \psi$, where $\Gamma$ denotes the generic Dirac matrix, for the lattice formulation of QCD using the overlap-Dirac operator. We also study the renormalization of quark bilinears which are more extended and have better chiral properties. Finally, we present improved estimates of these renormalization constants, coming from cactus resummation and from mean field perturbation theory.

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