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

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

1998-09-02

arxiv.org/abs/hep-lat/9809007v1

Phys.Rev. D59 (1999) 057503

Physics

High Energy Physics

High Energy Physics - Lattice

8 pages, 2 figures

Scientific paper

10.1103/PhysRevD.59.057503

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.

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