Boom and Bust Inflation: a Graceful Exit via Compact Extra Dimensions
arXiv:0807.0457 · doi:10.1103/PhysRevLett.101.221302
Abstract
A model of inflation is proposed in which compact extra dimensions allow a graceful exit without recourse to flat potentials or super-Planckian field values. Though bubbles of true vacuum are too sparse to uniformly reheat the Universe by colliding with each other, a compact dimension enables a single bubble to uniformly reheat by colliding with itself. This mechanism, which generates an approximately scale invariant perturbation spectrum, requires that inflation be driven by a bulk field, that vacuum decay be slow, and that the extra dimension be at least a hundred times larger than the false vacuum Hubble length.
11 pages, 5 figures
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- Flux Discharge Cascades in Various Dimensions
- New solutions with accelerated expansion in string theory
- Inflation from Flux Cascades
- Bubble Baryogenesis
- Chaotic Brane Inflation
- Getting inflationary models using the deformation method
- Inflation in Higher Dimensional Gauss-Bonnet Cosmology
- Rolling Through a Vacuum