Stable bounce and inflation in non-local higher derivative cosmology
- Department of Physics, Loyola University, 6363 St. Charles Avenue, Campus Box 92, New Orleans (United States)
- Theoretische Natuurkunde, Vrije Universiteit Brussel and The International Solvay Institutes, Pleinlaan 2, B-1050, Brussels (Belgium)
- Consortium for Fundamental Physics, Physics Department, Lancaster University, Lancaster, LA1 4YB (United Kingdom)
One of the greatest problems of primordial inflation is that the inflationary space-time is past-incomplete. This is mainly because Einstein's GR suffers from a space-like Big Bang singularity. It has recently been shown that ghost-free, non-local higher-derivative ultra-violet modifications of Einstein's gravity may be able to resolve the cosmological Big Bang singularity via a non-singular bounce. Within the framework of such non-local cosmological models, we are going to study both sub- and super-Hubble perturbations around an inflationary trajectory which is preceded by the Big Bounce in the past, and demonstrate that the inflationary trajectory has an ultra-violet completion and that perturbations do not suffer from any pathologies.
- OSTI ID:
- 22279866
- Journal Information:
- Journal of Cosmology and Astroparticle Physics, Vol. 2012, Issue 08; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1475-7516
- Country of Publication:
- United States
- Language:
- English
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