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arXiv · 1804.08673

Low energy constituent quark and pion effective couplings to external electromagnetic field and a weak magnetic field

Fábio L. Braghin
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Abstract

In this work, a compilation of effective electromagnetic field couplings to pions and constituent quarks and their effective interactions derived previously, including corrections to the NJL model, is presented. The particular case of a weak external magnetic field along the $\hat{z}$ direction is considered shortly and effective coupling constants are redefined to incorporate the weak-$B_0$ dependence. They correspond to corrections to well known pion-constituent quark couplings and to the NJL and vector NJL effective couplings that break isospin and chiral symmetries.

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Fábio L. Braghin. 2018-04-23. Low energy constituent quark and pion effective couplings to external electromagnetic field and a weak magnetic field. https://arxiv.org/abs/1804.08673

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