Resummation of Cactus Diagrams in the Clover Improved Lattice Formulation of QCD

Abstract

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.

8 pages, 2 figures

References in corpus (2)

• Resummation of Cactus Diagrams in Lattice QCD
• Perturbative Renormalization of Improved Lattice Operators

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