Astronomy and Astrophysics – Astrophysics
Scientific paper
1998-09-29
Phys.Rev.D59:083509,1999
Astronomy and Astrophysics
Astrophysics
31 pages, 18 figures, RevTeX, submitted to Phys. Rev. D
Scientific paper
10.1103/PhysRevD.59.083509
We study the general structure of models for structure formation, with applications to the reverse engineering of the model from observations. Through a careful accounting of the degrees of freedom in covariant gravitational instability theory, we show that the evolution of structure is completely specified by the stress history of the dark sector. The study of smooth, entropic, sonic, scalar anisotropic, vector anisotropic, and tensor anisotropic stresses reveals the origin, robustness, and uniqueness of specific model phenomenology. We construct useful and illustrative analytic solutions that cover cases with multiple species of differing equations of state relevant to the current generation of models, especially those with effectively smooth components. We present a simple case study of models with phenomenologies similar to that of a LambdaCDM model to highlight reverse-engineering issues. A critical-density universe dominated by a single type of dark matter with the appropriate stress history can mimic a LambdaCDM model exactly.
Eisenstein Daniel J.
Hu Wayne
No associations
LandOfFree
The Structure of Structure Formation Theories 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 The Structure of Structure Formation Theories, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Structure of Structure Formation Theories will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-692443