Regularizing the quark-level σ model
classification
✦ hep-ph
keywords
modelsigmadifferencedivergentencounteredfactfiniteindependent
read the original abstract
We show that the finite difference, $-i\pi^2 m^2$, 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 $\sigma$ model, is in fact regularization independent.
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