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 | Size | Format | |
---|---|---|---|---|
file3f190f5ab4ae426ab7421ca5ebad9c48.pdf | 194.22 kB | Adobe PDF | View/Open |
SCOPUSTM
Citations
18
checked on Aug 5, 2024
WEB OF SCIENCETM
Citations
15
checked on Aug 2, 2024
Page view(s) 50
506
checked on Aug 13, 2024
Download(s)
305
checked on Aug 13, 2024
Google ScholarTM
Check
Altmetric
Altmetric
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.