Dynamics of radiating braneworlds

Details Dynamics of radiating braneworlds Dynamics of radiating braneworlds

2003-09-17

arxiv.org/abs/gr-qc/0309080v3

Class.Quant.Grav. 21 (2004) 1125-1134

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

error in figures corrected, reference added

Scientific paper

10.1088/0264-9381/21/4/026

If the observable universe is a braneworld of Randall-Sundrum type, then particle interactions at high energies will produce 5-dimensional gravitons that escape into the bulk. As a result, the Weyl energy density on the brane does not behave like radiation in the early universe, but does so only later, in the low energy regime. Recently a simple model was proposed to describe this modification of the Randall-Sundrum cosmology. We investigate the dynamics of this model, and find the exact solution of the field equations. We use a dynamical systems approach to analyze global features of the phase space of solutions.

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