$Ω_0 <1$ From Inflation

Details $Ω_0 <1$ From Inflation $Ω_0 <1$ From Inflation

1995-01-27

arxiv.org/abs/hep-ph/9501396v1

Nucl.Phys.Proc.Suppl. 43 (1995) 173-176

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages + 2 postscript figures (uses phyzzx macros) For proceedings of the ASTPART conference held in Stockholm, Sweden in Sep

Scientific paper

10.1016/0920-5632(95)00473-M

An inflationary scenario that leads to $\Omega _0<1$ today is presented. An epoch of `old' inflation during which the smoothness and horizon problems are solved is followed by a shortened epoch of `new' inflation. Old inflation exits through the nucleation of a single bubble, leading to negative spatial curvature on slices of constant cosmic time. We calculate the spectrum of density perturbations in such a scenario.

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