A Rejuvenated Universe Without Initial Singularity

Details A Rejuvenated Universe Without Initial Singularity A Rejuvenated Universe Without Initial Singularity

Apr 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aps..apr.y6002g&link_type=abstract

American Physical Society, April Meeting, Jointly Sponsored with the High Energy Astrophysics Division (HEAD) of the American As

Astronomy and Astrophysics

Astrophysics

Scientific paper

The Hot Big Bang plus inflation is the standard model of the early universe. I will present a new cosmological model which uses the observed cosmic dark energy as initial conditions for an inflationary phase which mimics a Hot Big Bang. This inflationary phase (dubbed rejuvenation) will be produced if the effective cosmological constant increases with time. The universe undergoes superexponential expansion until it resumes radiation domination, leaving it identical to a Hot Big Bang in all measurable respects but avoiding an initial singularity. This process can produce adiabatic density perturbations as favored by recent observations of Cosmic Microwave Background anisotropy, although a blue tilt to the primordial power spectrum is predicted.

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