Toward a No-Go Theorem for an Accelerating Universe through a Nonlinear Backreaction

Details Toward a No-Go Theorem for an Accelerating Universe through a Nonlinear Backreaction Toward a No-Go Theorem for an Accelerating Universe through a Nonlinear Backreaction

2006-02-23

arxiv.org/abs/astro-ph/0602506v2

Prog.Theor.Phys. 115 (2006) 827-832

Astronomy and Astrophysics

Astrophysics

6 pages (PTPTeX); accepted for publication in Prog. Theor. Phys; minor changes to match published version

Scientific paper

10.1143/PTP.115.827

The backreaction of nonlinear inhomogeneities to the cosmic expansion is re-analyzed in the framework of general relativity. Apparent discrepancies regarding the effect of the nonlinear backreaction, which exist among the results of previous works in different gauges, are resolved. By defining the spatially averaged matter energy density as a conserved quantity in the large comoving volume, it is shown that the nonlinear backreaction neither accelerates nor decelerates the cosmic expansion in a matter-dominated universe. The present result in the Newtonian gauge is consistent with the previous results obtained in the comoving synchronous gauge. Although our work does not give a complete proof, it strongly suggests the following no-go theorem: No cosmic acceleration occurs as a result of the nonlinear backreaction via averaging.

Affiliated with

Also associated with

No associations

Rating

Toward a No-Go Theorem for an Accelerating Universe through a Nonlinear Backreaction 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 Toward a No-Go Theorem for an Accelerating Universe through a Nonlinear Backreaction, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Toward a No-Go Theorem for an Accelerating Universe through a Nonlinear Backreaction will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-711260