Please use this identifier to cite or link to this item: https://hdl.handle.net/10316/4406
Title: The role of hidden ambiguities in the linear sigma model with fermions
Authors: Hiller, Brigitte 
Mota, A. L. 
Nemes, M. C. 
Osipov, Alexander A. 
Sampaio, Marcos 
Issue Date: 2006
Citation: Nuclear Physics A. 769:(2006) 53-70
Abstract: The UL(3)×UR(3) linear sigma model (LSM) with quark degrees of freedom is used to show that radiative corrections generate undetermined finite contributions. Their origin is related to surface terms which are differences between divergent integrals with the same degree of divergence. The technique used to detect these ambiguities is an implicit regularization on basic divergent integrals that do not depend on external momenta. We show that such contributions are absorbed by renormalization or fixed by symmetry requirements. The general expression for surface terms is derived. Renormalization group coefficients are calculated, as well as relevant observables for this model, such as f[pi], f[kappa] and the pion and kaon form factors.
URI: https://hdl.handle.net/10316/4406
DOI: 10.1016/j.nuclphysa.2006.02.002
Rights: openAccess
Appears in Collections:FCTUC Física - Artigos em Revistas Internacionais

Files in This Item:
File Description SizeFormat
file3f190f5ab4ae426ab7421ca5ebad9c48.pdf194.22 kBAdobe PDFView/Open
Show full item record

SCOPUSTM   
Citations

18
checked on Jul 1, 2024

WEB OF SCIENCETM
Citations

15
checked on Jul 2, 2024

Page view(s) 50

502
checked on Jul 9, 2024

Download(s)

300
checked on Jul 9, 2024

Google ScholarTM

Check

Altmetric

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.