A Note on Brans-Dicke Cosmology with Axion
Sudipta Mukherji
TL;DR
This paper investigates the dynamics of Brans-Dicke cosmology incorporating an axion field, analyzing the evolution of the universe's expansion and scalar fields in a simplified, space-independent setting.
Contribution
It provides a solution to the dynamical equations of Brans-Dicke theory with an axion, revealing late-time decelerated expansion and growth of the dilaton.
Findings
Late-time decelerated expansion of the universe
Dilaton field grows large over time
Early universe fields approach constant values
Abstract
We study the Brans-Dicke model in the presence of an axion. The dynamical equations are solved when the fields are space independent and the metric is spatially flat. It is found that at late time the scale factor undergoes decelerated expansion but the dilaton grows large. At early time, scale factor and the dilaton approach constants.
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.