Covariant Fluid Dynamics: a Long Wave-Length Approximation

Details Covariant Fluid Dynamics: a Long Wave-Length Approximation Covariant Fluid Dynamics: a Long Wave-Length Approximation

2003-07-11

arxiv.org/abs/gr-qc/0307059v1

Class.Quant.Grav. 20 (2003) 5275-5290

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

18 pages. LaTeX2e. IOP Style

Scientific paper

10.1088/0264-9381/20/24/003

In this paper we consider the Long-Wavelength Approximation Scheme (LWAS) in the framework of the covariant fluid approach to general relativistic dynamics, specializing to the particular case of irrotational dust matter. We discuss the dynamics of these models during the approach to any spacelike singularity where a BKL-type evolution is expected, studying the validity of this approximation scheme and the role of the magnetic part of the Weyl tensor, $H_{ab}$. Our analytic results confirm a previous numerical analysis: it is $H_{ab}$ that destroys the pure Kasner-like approach to the singularity and eventually produces the bounce to another Kasner phase. Expanding regions evolve as separate universes where inhomogeneities and anisotropies die away.

Affiliated with

Also associated with

No associations

Rating

Covariant Fluid Dynamics: a Long Wave-Length Approximation 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 Covariant Fluid Dynamics: a Long Wave-Length Approximation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Covariant Fluid Dynamics: a Long Wave-Length Approximation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-443441