학술논문
Renormalization Group Invariance in Pionless Effective Field Theory for the NN System.
Document Type
Article
Author
Source
Subject
*RENORMALIZATION group
*QUANTUM field theory
*FIELD theory (Physics)
*NUCLEON-nucleon scattering
*PHASE shift (Nuclear physics)
*PIONS
*NUCLEAR physics
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Language
ISSN
0177-7963
Abstract
We consider the NN interaction in pionless effective field theory (EFT) up to next-to-next-to-leading order (NNLO) and use a recursive subtractive renormalization scheme to describe NN scattering in the S channel. We fix the strengths of the contact interactions at a reference scale, chosen to be the one that provides the best fit for the phase-shifts, and then slide the renormalization scale by evolving the driving terms of the subtracted Lippmann-Schwinger equation through a non-relativistic Callan-Symanzik equation. The results show that such a systematic renormalization scheme with multiple subtractions is fully renormalization group invariant. [ABSTRACT FROM AUTHOR]