Aspects of Galileon Non-Renormalization
arXiv:1606.02295 · doi:10.1007/JHEP11(2016)100
Abstract
We discuss non-renormalization theorems applying to galileon field theories and their generalizations. Galileon theories are similar in many respects to other derivatively coupled effective field theories, including general relativity and $P(X)$ theories. In particular, these other theories also enjoy versions of non-renormalization theorems that protect certain operators against corrections from self-loops. However, we argue that the galileons are distinguished by the fact that they are not renormalized even by loops of other heavy fields whose couplings respect the galileon symmetry.
33 pages. v2: minor corrections, added comments, version to appear in JHEP