Second order perturbation theory for improved gluon and staggered quark actions
نویسندگان
چکیده
منابع مشابه
Second Order Perturbation Theory for Improved Gluon and Staggered Quark Actions
It has long been known that perturbative calculations are necessary for precision measurements of many quantities. Unfortunately perturbation theory using a lattice cutoff is difficult, due to extra diagrams and vastly more complicated Feynman rules. The complexity of these calculations is an impediment to doing the higher–order perturbation theory required for many important applications of im...
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The Schrödinger functional (quantum/lattice field theory with Dirichlet boundary conditions) is a powerful tool in the non-perturbative improvement and for the study of other aspects of lattice QCD. Here we adapt it to improved gluon and quark actions, on isotropic as well as anisotropic lattices. Specifically, we describe the structure of the boundary layers, obtain the exact form of the class...
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ژورنال
عنوان ژورنال: Nuclear Physics B - Proceedings Supplements
سال: 2002
ISSN: 0920-5632
DOI: 10.1016/s0920-5632(01)01860-6