Mathematics – Logic
Scientific paper
Nov 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999phrvd..60j3515s&link_type=abstract
Physical Review D (Particles, Fields, Gravitation, and Cosmology), Volume 60, Issue 10, 15 November 1999, id. 103515
Mathematics
Logic
Classical General Relativity
Scientific paper
In this paper we show a procedure to construct cosmological models which, according to a covariant criterion, can be seen as exact (nonlinear) perturbations of the standard Friedmann-Lemaı⁁tre-Robertson-Walker (FLRW) cosmological models. The special properties of this procedure will allow us to select some of the characteristics of the models and also to study in depth their main geometrical and physical features. In particular, the models are conformally stationary, which means that they are compatible with the existence of isotropic radiation, and the observers that would measure this isotropy are rotating. Moreover, these models have two arbitrary functions (one of them is a complex function) which control their main properties, and in general they do not have any isometry. We study two examples, focusing on the case when the underlying FLRW models are flat dust models. In these examples we compare our results with those of the linearized theory of perturbations about a FLRW background.
No associations
LandOfFree
Constructing exact perturbations of the standard cosmological 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 Constructing exact perturbations of the standard cosmological models, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Constructing exact perturbations of the standard cosmological models will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1512727