Is Cosmic Speed-Up Due to New Gravitational Physics?

Details Is Cosmic Speed-Up Due to New Gravitational Physics? Is Cosmic Speed-Up Due to New Gravitational Physics?

2003-06-22

arxiv.org/abs/astro-ph/0306438v2

Phys.Rev.D70:043528,2004

Astronomy and Astrophysics

Astrophysics

4 pages, 1 figure, RevTeX. Typos corrected, references updated

Scientific paper

10.1103/PhysRevD.70.043528

We show that cosmic acceleration can arise due to very tiny corrections to the usual gravitational action of General Relativity of the form $R^n$, with $n<0$. This eliminates the need for dark energy, though it does not address the cosmological constant problem. Since a modification to the Einstein-Hilbert action of the form $R^n$, with $n>0$, can lead to early-time inflation, our proposal provides a unified and purely gravitational origin for the early and late time accelerating phases of the Universe.

Affiliated with

Also associated with

No associations

Rating

Is Cosmic Speed-Up Due to New Gravitational Physics? does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Is Cosmic Speed-Up Due to New Gravitational Physics?, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Is Cosmic Speed-Up Due to New Gravitational Physics? will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-154259