Fermion regularization, fermion measure and axion fields
General Physics
2016-12-21 v3
Abstract
Axion fields were originally introduced to control CP violation due to the theta term in QCD. Pauli-Villars regularization, or the use of a parity symmetric fermion measure, however, preserves CP in the fermion sector. A CP violation arising from the theta term can then be neutralized in a natural way by setting theta equal to zero.
Cite
@article{arxiv.1504.07936,
title = {Fermion regularization, fermion measure and axion fields},
author = {P. Mitra},
journal= {arXiv preprint arXiv:1504.07936},
year = {2016}
}
Comments
4 pages; regularization argument expanded and measure argument simplified; invited talk at "New trends in Field Theories", Varanasi, November 2016