D-braneworld cosmology

Details D-braneworld cosmology D-braneworld cosmology

2003-02-28

arxiv.org/abs/hep-th/0302223v3

Phys.Rev. D67 (2003) 123517

Physics

High Energy Physics

High Energy Physics - Theory

6 pages, 3 figures, minor corrections, accepted for publication in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.67.123517

We discuss D-braneworld cosmology, that is, the brane is described by the Born-Infeld action. Compared with the usual Randall-Sundrum braneworld cosmology where the brane action is the Nambu-Goto one, we can see some drastic changes at the very early universe: (i)universe may experience the rapid accelerating phase (ii)the closed universe may avoid the initial singularity. We also briefly address the dynamics of the cosmology in the open string metric, which might be favorer than the induced metric from the view point of the D-brane.

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