Subtractive Renormalization of the NJL model ∗

Tipo
Artigo de evento
Data de publicação
2016
Periódico
Journal of Physics: Conference Series
Citações (Scopus)
1
Autores
Timoteo V.S.
Batista E.F.
Farias R.L.S.
Szpigel S.
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Resumo
© Published under licence by IOP Publishing Ltd.In this work, we apply a subtractive renormalization method to the SU(2) Nambu-Jona-Lasinio (NJL) model in Born approximation and compare the results obtained here with those achieved by the standard momentum cutoff regularization. We have computed the dynamical quark mass, the chiral condensate, the pion mass and the quark-antiquark T-matrix as a function of the cutoff Λ and the subtraction scale ξ. We have shown that both approaches give similar results and the dependence of the physical quantities on the subtraction point ξ is much weaker than the dependence on the cutoff Λ.
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Antiquarks , Dynamical quarks , Physical quantities , Renormalization , Renormalization methods , T matrix
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