Modified teleparallel gravity: inflation without inflaton
General Relativity and Quantum Cosmology
2008-11-26 v2 Astrophysics
High Energy Physics - Theory
Abstract
Born-Infeld strategy to smooth theories having divergent solutions is applied to teleparallel equivalent of General Relativity. Differing from other theories of modified gravity, modified teleparallelism leads to second order equations, since teleparallel Lagrangian only contains first derivatives of the vierbein. We show that Born-Infeld-modified teleparallelism solves the particle horizon problem in a spatially flat FRW universe by providing an initial exponential expansion without resorting to an inflaton field.
Keywords
Cite
@article{arxiv.gr-qc/0610067,
title = {Modified teleparallel gravity: inflation without inflaton},
author = {Rafael Ferraro and Franco Fiorini},
journal= {arXiv preprint arXiv:gr-qc/0610067},
year = {2008}
}
Comments
4 pages, 2 figures. Version to be published in Physical Review D