Axial Couplings on the World-Line
High Energy Physics - Theory
2009-10-28 v2 High Energy Physics - Phenomenology
Abstract
We construct a world-line representation for the fermionic one-loop effective action with axial and also vector, scalar, and pseudo-scalar couplings. We use this expression to compute a few selected scattering amplitudes. These allow us to verify that our method yields the same results as standard field theory. In particular, we are able to reproduce the chiral anomaly. Our starting point is the second-order formulation for the Dirac fermion. We translate the second order expressions into a world-line action.
Keywords
Cite
@article{arxiv.hep-th/9510036,
title = {Axial Couplings on the World-Line},
author = {Myriam Mondragon and Lukas Nellen and Michael G. Schmidt and Christian Schubert},
journal= {arXiv preprint arXiv:hep-th/9510036},
year = {2009}
}
Comments
12 pages, LaTeX 2e with array and epsf packages, Postscript figures. Submitted to Phys. Lett. B. Minor corrections, fixed a number of typos