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2011 | 9 | 5 | 1237-1247
Tytuł artykułu

Symmetry preserving regularization with a cutoff

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
A Lorentz and gauge symmetry preserving regularization method is proposed in 4 dimensions based on a momentum cutoff. We use the conditions of gauge invariance or equivalently the freedom to shift the loop momentum to define the evaluation of the terms carrying even number of Lorentz indices, e.g. proportional to k µ k ν. The remaining scalar integrals are calculated with a four dimensional momentum cutoff. The finite terms (independent of the cutoff) are free of ambiguities coming from subtractions in non-trivial cases. Finite parts of the result are equal to that of dimensional regularization.
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Wydawca

Czasopismo
Rocznik
Tom
9
Numer
5
Strony
1237-1247
Opis fizyczny
Daty
wydano
2011-10-01
online
2011-09-15
Twórcy
  • Theoretical Physics Research Group of Hungarian Academy of Sciences, Eötvös University, Budapest, 1117 Pázmány Péter sétány 1/A, Hungary, cyn@general.elte.hu
  • Theoretical Physics Research Group of Hungarian Academy of Sciences, Eötvös University, Budapest, 1117 Pázmány Péter sétány 1/A, Hungary
Bibliografia
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Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_2478_s11534-011-0039-y
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