Potential NRQED: The Positronium Case
High Energy Physics - Phenomenology
2009-10-31 v2 Nuclear Theory
Atomic Physics
Abstract
We discuss in detail potential NRQED (pNRQED), a previously proposed effective field theory for ultrasoft photons. The pNRQED lagrangian for the equal mass case is presented and it is shown that it correctly reproduces the positronium spectrum at order . The pNRQED lagrangian for the unequal mass case is also presented at the same order. Dimensional regularization is used throughout.
Cite
@article{arxiv.hep-ph/9805424,
title = {Potential NRQED: The Positronium Case},
author = {A. Pineda and J. Soto},
journal= {arXiv preprint arXiv:hep-ph/9805424},
year = {2009}
}
Comments
20 pages, LaTeX, 1 ps file with 5 figures. One reference added. Minor changes to match with version to be published in Phys. Rev. D