English

Bounce from Inflation

Cosmology and Nongalactic Astrophysics 2020-08-25 v3 General Relativity and Quantum Cosmology

Abstract

We construct a class of viable bouncing models that are conformally related to cosmological inflation. There are three main difficulties in constructing such a model: (i) A stable (attractor) solution, (ii) A non-singular bounce, and (iii) to bypass the no-go theorem that states that simultaneously maintaining the observational bounds on the tensor-to-scalar ratio and the non-Gaussian scalar spectrum are not possible. We show that a non-minimal coupling of the scalar field helps to bypass these difficulties and provides a viable bouncing model with a naturally occurring reheating epoch briefly after the bouncing phase.

Keywords

Cite

@article{arxiv.2003.02066,
  title  = {Bounce from Inflation},
  author = {Debottam Nandi},
  journal= {arXiv preprint arXiv:2003.02066},
  year   = {2020}
}

Comments

5 pages, 3 figures, accepted in Phys. Lett. B

R2 v1 2026-06-23T14:03:40.093Z