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Type: Artigo de periódico
Title: Power counting and renormalization group invariance in the subtracted kernel method for the two-nucleon system
Author: Szpigel, S
Timoteo, VS
Abstract: We apply the subtracted kernel method (SKM), a renormalization approach based on recursive multiple subtractions performed in the kernel of the scattering equation, to the chiral nucleon-nucleon (NN) interactions up to next-to-next-to-leading-order. We evaluate the phase-shifts in the S-1(0) channel at each order in Weinberg's power counting scheme and in a modified power counting scheme which yields a systematic power-law improvement. We also explicitly demonstrate that the SKM procedure is renormalization group invariant under the change of the subtraction scale through a non-relativistic Callan-Symanzik flow equation for the evolution of the renormalized NN interactions.
Country: Inglaterra
Editor: Iop Publishing Ltd
Rights: fechado
Identifier DOI: 10.1088/0954-3899/39/10/105102
Date Issue: 2012
Appears in Collections:Unicamp - Artigos e Outros Documentos

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