English

Galileon Bouncing Inflation after BICEP2

General Relativity and Quantum Cosmology 2014-04-14 v1 Cosmology and Nongalactic Astrophysics High Energy Physics - Phenomenology High Energy Physics - Theory

Abstract

We present a nonsingular scenario in which an inflation era goes after a bounce from a contracting scenario in the early universe. The contracting of the universe is supposed to be slow, such that the initial anisotropies will not grow too fast to become dominant and destroy the bounce. After the bounce, the universe enters into an inflationary region and reheating phase, where primordial perturbations are generated. The tensor-to-scalar ratio of the perturbations are expected to be consistent with the newly released data, r=0.20.05+0.07r=0.2^{+0.07}_{-0.05}. The addition of the bounce process is aimed at getting rid of the annoying Big-Bang Singularity, which generally exist in pure inflation models.

Keywords

Cite

@article{arxiv.1404.3060,
  title  = {Galileon Bouncing Inflation after BICEP2},
  author = {Taotao Qiu},
  journal= {arXiv preprint arXiv:1404.3060},
  year   = {2014}
}

Comments

6 pages, 2 figures

R2 v1 2026-06-22T03:48:39.777Z