Λ=0 Cosmology of a Brane-like Universe

Details Λ=0 Cosmology of a Brane-like Universe Λ=0 Cosmology of a Brane-like Universe

1997-10-01

arxiv.org/abs/gr-qc/9710005v2

Class.Quant.Grav. 16 (1999) 653-659

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

Revtex, 5 twocolumn pages, No figures (revised version, accepted for publication in Class. Quan. Grav.)

Scientific paper

10.1088/0264-9381/16/3/003

We examine the possibility that Friedman-Robertson-Walker evolution is governed by an effective (rather then by the actual) energy density. A concrete example is provided by $\Lambda=0$ Regge-Teitelboim cosmology, where critical cosmology only requires subcritical matter density $(\Omega_{m}<1)$, and the age of a flat matter dominated Universe gets enhanced by a factor of 9/8. Dual to the mature dilute Universe is the embryo Universe, the evolution of both is governed by $P_{eff}=-{1/9}\rho_{eff}$.

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