Anomaly-induced charges in baryons
High Energy Physics - Phenomenology
2013-05-30 v1 High Energy Physics - Theory
Nuclear Theory
Abstract
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.
Keywords
Cite
@article{arxiv.1109.0020,
title = {Anomaly-induced charges in baryons},
author = {Minoru Eto and Koji Hashimoto and Hideaki Iida and Takaaki Ishii and Yu Maezawa},
journal= {arXiv preprint arXiv:1109.0020},
year = {2013}
}
Comments
18 pages, 12 figures