Extending Horndeski theories into Lovelock gravity
General Relativity and Quantum Cosmology
2018-05-18 v3 Cosmology and Nongalactic Astrophysics
High Energy Physics - Theory
Abstract
The Horndeski theories are extended into the Lovelock gravity theory. When the canonical scalar field is uniquely kinetically coupled to the Lovelock tensors, it is named after Lovelock scalar field. The Lovelock scalar field model is a subclass of the new Horndeski theories. A most attractive feature of the Lovelock scalar field is its equation of motion is second order. So it is free of ghosts. We study the cosmology of Lovelock scalar field in the background of dimensional spacetime and present a class of cosmic solutions. These solutions reveal the physics of the scalar field is rather rich and merit further study.
Keywords
Cite
@article{arxiv.1804.03535,
title = {Extending Horndeski theories into Lovelock gravity},
author = {Changjun Gao},
journal= {arXiv preprint arXiv:1804.03535},
year = {2018}
}
Comments
9 pages,8 figures. errors corrected, references added