Perturbative renormalization for overlap fermions
نویسندگان
چکیده
منابع مشابه
Block renormalization group transformations and overlap fermions
In this preliminary work, I provide the outline of an argument (leaving the full proof to a future publication) that there exists a valid renormalization group blocking transformation which converts the continuum fermion action into a Ginsparg-Wilson lattice action. I construct the blocking for the massless overlap operator as a specific example, indicating how other Ginsparg-Wilson lattice Dir...
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We calculate the 1-loop renormalization of the fermion self-energy, all local fermion bilinears, as well as a set of extended bilinears which form a basis corresponding to moments of the parton distribution functions. We use the overlap action for fermions and Symanzik improved action for gluons. Our results are presented as a function of the overlap parameter ρ and the parameters entering the ...
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We present non-perturbative renormalization constants of fermionic bilinears on the lattice in the quenched approximation at β = 6.1 using an overlap [1] fermion action with hypercubic(HYP)blocked links. We consider the effects of the exact zero modes of the Dirac operator and find they are important in calculating the renormalization constants of the scalar and pseudoscalar density. The result...
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Renormalization factors for bilinear and four-quark operators with the KogutSusskind fermion action are perturbatively calculated to one-loop order in the general covariant gauge. Results are presented both for gauge invariant and non-invariant operators. For four-quark operators the full renormalization matrix for a complete set of operators with two types of color contraction structures are w...
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The power of the overlap formalism is illustrated by regularizing theories based on Majorana-Weyl fermions. The results reported in this contribution were obtained in collaboration with Patrick Huet [1]. More than half of the talk will be independent of the overlap formalism. To present our ideas in the simplest context possible we start directly from an example. Consider a U (1) chiral model, ...
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ژورنال
عنوان ژورنال: Nuclear Physics B - Proceedings Supplements
سال: 2002
ISSN: 0920-5632
DOI: 10.1016/s0920-5632(01)01856-4