Cutoff regulators in chiral nuclear effective field theory
Nuclear Theory
2016-05-10 v1 High Energy Physics - Phenomenology
Abstract
Three-dimensional cutoff regulators are frequently employed in multi-nucleon calculations, but they violate chiral symmetry and Lorentz invariance. A cutoff regularization scheme is proposed to compensate systematically at subleading orders for these symmetry violations caused by regulator artifacts. This is especially helpful when a soft momentum cutoff has to be used for technical reasons. It is also shown that dimensional regularization can still be used for some Feynman (sub)diagrams while cutoff regulators are used for the rest.
Cite
@article{arxiv.1605.02153,
title = {Cutoff regulators in chiral nuclear effective field theory},
author = {Bingwei Long and Ying Mei},
journal= {arXiv preprint arXiv:1605.02153},
year = {2016}
}
Comments
11 pages, published version