Dynamically Broken Scale Invariance and Cosmology
High Energy Physics - Phenomenology
2007-05-23 v1 Astrophysics
Abstract
A new scalar-tensor theory of gravity induced by dynamically broken scale invariance is proposed, and its cosmological implications are discussed. It is found that the model admits an inflation via the Hawking-Moss bubbling, but the inflation rate remains undetermined due to the strong gravity limit. In light of this, scale-invariant metric perturbations having a dominant tensor component can be generated without slow-rollover. In addition, the deviation from the standard hot big-bang is vanishingly small after inflation.
Cite
@article{arxiv.hep-ph/9708400,
title = {Dynamically Broken Scale Invariance and Cosmology},
author = {Shih-Yuin Lin and Kin-Wang Ng},
journal= {arXiv preprint arXiv:hep-ph/9708400},
year = {2007}
}
Comments
4 pages, REVTeX, no figure