Resummation of cactus diagrams in the clover improved lattice formulation of QCD
Date
1999Source
Physical Review D - Particles, Fields, Gravitation and CosmologyVolume
59Issue
5Pages
1-4Google Scholar check
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We extend to the clover improved lattice formulation of QCD the resummation of cactus diagrams, i.e., a certain class of tadpole-like gauge invariant diagrams. Cactus resummation yields an improved perturbative expansion. We apply it to the lattice renormalization of some two-fermion operators improving their one-loop perturbative estimates. ©1999 The American Physical Society.