Anomaly-induced charges in baryons

Details Anomaly-induced charges in baryons Anomaly-induced charges in baryons

2011-08-31

arxiv.org/abs/1109.0020v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

18 pages, 12 figures

Scientific paper

We show that quantum chiral anomaly of QCD in magnetic backgrounds induces a novel structure of electric charge inside baryons. To illustrate the anomaly effect, we employ the Skyrme model for baryons, with the anomaly-induced gauged Wess-Zumino term (\pi_0 + (multi-pion)) E_i B_i. Due to this term, the Skyrmions giving a local pion condensation ((\pi_0 + (multi-pion)) \neq 0) necessarily become a local charge source, in the background magnetic field B_i. We present detailed evaluation of the anomaly effects, and calculate the total induced charge, for various baryons in the magnetic field.

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