Geometrized quantum Galileons
Abstract
We investigate the renormalization structure of the scalar Galileon model in flat spacetime by calculating the one-loop divergences in a closed geometric form. The geometric formulation is based on the definition of an effective Galileon metric and allows to apply known heat-kernel techniques. The result for the one-loop divergences is compactly expressed in terms of curvature invariants of the effective Galileon metric and corresponds to a resummation of the divergent one-loop contributions of all n-point functions. The divergent part of the one-loop effective action therefore serves as generating functional for arbitrary n-point counterterms. We discuss our result within the Galileon effective field theory and give a brief outlook on extensions to more general Galileon models in curved spacetime.
Keywords
Cite
@article{arxiv.1909.07111,
title = {Geometrized quantum Galileons},
author = {Lavinia Heisenberg and Christian F. Steinwachs},
journal= {arXiv preprint arXiv:1909.07111},
year = {2020}
}
Comments
25 pages, no figures; typos corrected, references updated, discussion in Sec. 5 extended, published in JCAP