Acoustics of early universe. I. Flat versus open universe models

Details Acoustics of early universe. I. Flat versus open universe models Acoustics of early universe. I. Flat versus open universe models

2000-02-15

arxiv.org/abs/gr-qc/0002050v2

Class.Quant.Grav. 18 (2001) 543-554

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

The new version extended by 2 sections. Changes in notation. Some important comments added

Scientific paper

10.1088/0264-9381/18/3/313

A simple perturbation description unique for all signs of curvature, and based on the gauge-invariant formalisms is proposed to demonstrate that: (1) The density perturbations propagate in the flat radiation-dominated universe in exactly the same way as electromagnetic or gravitational waves propagate in the epoch of the matter domination. (2) In the open universe, sounds are dispersed by curvature. The space curvature defines the minimal frequency $\omega_{\rm c}$ below which the propagation of perturbations is forbidden. Gaussian acoustic fields are considered and the curvature imprint in the perturbations spectrum is discussed.

Affiliated with

Also associated with

No associations

Rating

Acoustics of early universe. I. Flat versus open universe models 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 Acoustics of early universe. I. Flat versus open universe models, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Acoustics of early universe. I. Flat versus open universe models will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-612824