Why the cosmological constant is small and positive

Details Why the cosmological constant is small and positive Why the cosmological constant is small and positive

2006-05-06

arxiv.org/abs/astro-ph/0605173v1

Science 312:1180-1182,2006

Astronomy and Astrophysics

Astrophysics

15 pages, 1 figure

Scientific paper

10.1126/science.1126231

Within conventional big bang cosmology, it has proven to be very difficult to understand why today's cosmological constant is so small. In this paper, we show that a cyclic model of the universe can naturally incorporate a dynamical mechanism that automatically relaxes the value of the cosmological constant, taking account of contributions to the vacuum density at all energy scales. Because the relaxation time grows exponentially as the vacuum density decreases, nearly every volume of space spends an overwhelming majority of the time at the stage when the cosmological constant is small and positive, as observed today.

Affiliated with

Also associated with

No associations

Rating

Why the cosmological constant is small and positive 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 Why the cosmological constant is small and positive, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Why the cosmological constant is small and positive will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-81234