Covariant multi-galileons and their generalisation
General Relativity and Quantum Cosmology
2015-06-11 v2 Cosmology and Nongalactic Astrophysics
High Energy Physics - Theory
Abstract
We find a covariant completion of the flat-space multi-galileon theory, preserving second-order field equations. We then generalise this to arrive at an enlarged class of second order theories describing multiple scalars and a single tensor, and conjecture that these are a multi-scalar version of Horndeski's most general scalar-tensor theory.
Cite
@article{arxiv.1210.4026,
title = {Covariant multi-galileons and their generalisation},
author = {Antonio Padilla and Vishagan Sivanesan},
journal= {arXiv preprint arXiv:1210.4026},
year = {2015}
}
Comments
Reference to recent proof of generality of multi-scalar theory added. Some minor typos corrected