Journal
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
Volume -, Issue 3, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1475-7516/2017/03/009
Keywords
cosmic singularity; modified gravity
Funding
- National Science Foundation [Phys-1518371]
- Simons Foundation
- The Dark Universe
- Cluster of Excellence ''Origin and Structure of the Universe [EXC 153]
- Division Of Physics
- Direct For Mathematical & Physical Scien [1518371] Funding Source: National Science Foundation
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We find a simple modification of the longitudinal mode in General Relativity which incorporates the idea of limiting curvature. In this case the singularities in contracting Friedmann and Kasner universes are avoided, and instead, the universe has a regular bounce which takes place during the time inversely proportional to the square root of the limiting curvature. Away from the bounce, corrections to General Relativity are negligible. In addition the non-singluar modification of General Relativity delivers for free a realistic candidate for Dark Matter.
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