Title

Inflation without Inflaton(s)

Author(s)/Creator(s)

Scott Watson, Syracuse University
Malcolm J. Perry, Department of Applied Mathematics and Theoretical Physics, England
Gordon L. Kane, University of Michigan - Ann Arbor
Fred C. Adams, University of Michigan - Ann Arbor

Document Type

Article

Date

5-8-2008

Language

English

Disciplines

Physics

Description/Abstract

We propose a model for early universe cosmology without the need for fundamental scalar fields. Cosmic acceleration and phenomenologically viable reheating of the universe results from a series of energy transitions, where during each transition vacuum energy is converted to thermal radiation. We show that this `cascading universe' can lead to successful generation of adiabatic density fluctuations and an observable gravity wave spectrum in some cases, where in the simplest case it reproduces a spectrum similar to slow-roll models of inflation. We also find the model provides a reasonable reheating temperature after inflation ends. This type of model may also be relevant for addressing the smallness of the vacuum energy today.

Additional Information

13 pages, 4 figures, published version More informaton at http://arxiv.org/abs/hep-th/0610054

Recommended Citation

Watson, Scott; Perry, Malcolm J.; Kane, Gordon L.; and Adams, Fred C., "Inflation without Inflaton(s)" (2008). Physics - All Scholarship. 412.
https://surface.syr.edu/phy/412

Source

Harvested from Arxiv.org

Creative Commons License

This work is licensed under a Creative Commons Attribution 3.0 License.