Cosmic inflation from broken conformal symmetry
General Relativity and Quantum Cosmology
2022-09-01 v3 Cosmology and Nongalactic Astrophysics
Abstract
A period of rapidly accelerating expansion is expected in the early Universe implemented by a scalar field slowly rolling down along an asymptotically flat potential preferred by the current data. In this paper, we point out that this picture of the cosmic inflation with an asymptotically flat potential could emerge from the Palatini quadratic gravity by adding the matter field in such a way to break the local gauged conformal symmetry in both kinetic and potential terms.
Keywords
Cite
@article{arxiv.2110.14718,
title = {Cosmic inflation from broken conformal symmetry},
author = {Rong-Gen Cai and Yu-Shi Hao and Shao-Jiang Wang},
journal= {arXiv preprint arXiv:2110.14718},
year = {2022}
}
Comments
v1, 11 pages; v2, references added, improved presentation and extended discussion; v3, major revision, version accepted for publication in Commun.Theor.Phys