Inflationary Attractor in Braneworld Scenario

Details Inflationary Attractor in Braneworld Scenario Inflationary Attractor in Braneworld Scenario

2003-09-15

arxiv.org/abs/hep-ph/0309163v2

Phys.Rev. D69 (2004) 063502

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages, 8 figures, RevTeX, to appear in Phys. Rev. D69 (2004)

Scientific paper

10.1103/PhysRevD.69.063502

We demonstrate the attractor behavior of inflation driven by a scalar field or a tachyon field in the context of recently proposed four-dimensional effective gravity induced on the world-volume of a three-brane in five-dimensional Einstein gravity, and we obtain a set of exact inflationary solutions. Phase portraits indicate that an initial kinetic term decays rapidly and it does not prevent the onset of inflation. The trajectories more rapidly reach the slow-roll curve than in the standard cosmology.

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