Emergent Universe from Scale Invariant Two Measures Theory
Cosmology and Nongalactic Astrophysics
2015-05-28 v1 General Relativity and Quantum Cosmology
High Energy Physics - Theory
Abstract
The dilaton-gravity sector of a linear in the scalar curvature, scale invariant Two Measures Field Theory (TMT), is explored in detail in the context of closed FRW cosmology and shown to allow stable emerging universe solutions. The model possesses scale invariance which is spontaneously broken due to the intrinsic features of the TMT dynamics. We study the transition from the emerging phase to inflation, and then to a zero cosmological constant phase. We also study the spectrum of density perturbations and the constraints that impose on the parameters of the theory.
Cite
@article{arxiv.1105.0651,
title = {Emergent Universe from Scale Invariant Two Measures Theory},
author = {Sergio del Campo and Eduardo I. Guendelman and Alexander B. Kaganovich and Ramon Herrera and Pedro Labrana},
journal= {arXiv preprint arXiv:1105.0651},
year = {2015}
}
Comments
10 pages, 2 figures. Accepted for publication in Phys. Lett. B