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arXiv · hep-ph/9807505

Regularizing the quark-level $σ$ model

R. Delbourgo·A. A. Rawlinson·M. D. Scadron
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Abstract

We show that the finite difference, $-iπ^2 m^2$, between quadratic and logarithmic divergent integrals $\int d^4p[m^2(p^2-m^2)^{-2}-(p^2-m^2)^{-1}]$, as encountered in the linear $σ$ model, is in fact regularization independent.

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R. Delbourgo, A. A. Rawlinson, M. D. Scadron. 1998-07-27. Regularizing the quark-level $σ$ model. https://doi.org/10.1142/s0217732398001996

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