Effective $\theta$ term by CP-odd electromagnetic background fields
High Energy Physics - Lattice
2013-12-11 v1 High Energy Physics - Phenomenology
High Energy Physics - Theory
Abstract
We discuss our study of QCD in the presence of CP-odd electromagnetic (e.m.) background fields. We investigate the propagation of the CP-odd term from the e.m. sector to the strong sector, inducing an effective term. We discuss the method we have used in our lattice QCD simulations, and the results of our analysis, which are relevant to the determination of the effective pseudoscalar QED-QCD interactions. We also explore how these CP-odd e.m. background fields influence the number of the Dirac zero modes in our configurations.
Keywords
Cite
@article{arxiv.1312.2805,
title = {Effective $\theta$ term by CP-odd electromagnetic background fields},
author = {Claudio Bonati and Guido Cossu and Massimo D'Elia and Marco Mariti and Francesco Negro},
journal= {arXiv preprint arXiv:1312.2805},
year = {2013}
}
Comments
presented at the 31st International Symposium on Lattice Field Theory (Lattice 2013), 29 July - 3 August 2013, Mainz, Germany