Symmetry preserving regularization with a cutoff

• Autorzy: Gabor Cynolter , Endre Lendvai
• 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.

Słowa kluczowe

EN

regularization; cutoff; 1-loop calculation

• Czasopismo: Open Physics
• Rocznik: 2011
• Tom: 9
• Numer: 5
• Strony: 1237-1247

Daty

wydano

2011-10-01

online

2011-09-15

Twórcy

autor

Gabor Cynolter

• Theoretical Physics Research Group of Hungarian Academy of Sciences, Eötvös University, Budapest, 1117 Pázmány Péter sétány 1/A, Hungary,

autor

Endre Lendvai

• Theoretical Physics Research Group of Hungarian Academy of Sciences, Eötvös University, Budapest, 1117 Pázmány Péter sétány 1/A, Hungary

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Identyfikatory

DOI

10.2478/s11534-011-0039-y