Entropy and holography constraints for inhomogeneous universes

Details Entropy and holography constraints for inhomogeneous universes Entropy and holography constraints for inhomogeneous universes

2000-06-27

arxiv.org/abs/astro-ph/0006395v1

Phys.Rev.Lett.85:5507-5510,2000

Astronomy and Astrophysics

Astrophysics

4 pages, revtex style, 3 figures in 8 eps-files

Scientific paper

10.1103/PhysRevLett.85.5507

We calculated the entropy of a class of inhomogeneous dust universes. Allowing spherical symmetry, we proposed a holographic principle by reflecting all physical freedoms on the surface of the apparent horizon. In contrast to flat homogeneous counterparts, the principle may break down in some models, though these models are not quite realistic. We refined fractal parabolic solutions to have a reasonable entropy value for the present observable universe and found that the holographic principle always holds in the realistic cases.

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