Abstract
We provide an gravity description of a bouncing model, without the need for matter fluids or for a cosmological constant. As we explicitly demonstrate, the two cosmological eras that constitute the bouncing model can be generated by gravity, which can lead to accelerating cosmologies. The resulting gravity has the Einstein frame inflationary properties that have concordance with the latest Planck observational data. Both the gravity stability properties are thoroughly investigated, and also, the gravitational particle production, a feature necessary for the viability of the bounce scenario, is also addressed. As we will show, the bounce model can be successfully described by pure gravity, with appealing phenomenological attributes, which we extensively discuss.
- Received 20 January 2015
DOI:https://doi.org/10.1103/PhysRevD.91.064036
© 2015 American Physical Society