Non-Local Modification of Gravity and the Cosmological Constant Problem

Details Non-Local Modification of Gravity and the Cosmological Constant Problem Non-Local Modification of Gravity and the Cosmological Constant Problem

2002-09-26

arxiv.org/abs/hep-th/0209227v1

Physics

High Energy Physics

High Energy Physics - Theory

22 pages

Scientific paper

We propose a phenomenological approach to the cosmological constant problem based on generally covariant non-local and acausal modifications of four-dimensional gravity at enormous distances. The effective Newton constant becomes very small at large length scales, so that sources with immense wavelengths and periods -- such as the vacuum energy-- produce minuscule curvature. Conventional astrophysics, cosmology and standard inflationary scenaria are unaffected, as they involve shorter length scales. A new possibility emerges that inflation may ``self-terminate'' naturally by its own action of stretching wavelengths to enormous sizes. In a simple limit our proposal leads to a modification of Einstein's equation by a single additional term proportional to the average space-time curvature of the Universe. It may also have a qualitative connection with the dS/CFT conjecture.

Affiliated with

Also associated with

No associations

Rating

Non-Local Modification of Gravity and the Cosmological Constant Problem 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 Non-Local Modification of Gravity and the Cosmological Constant Problem, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Non-Local Modification of Gravity and the Cosmological Constant Problem will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-524039