${\Omega }_0<1$ From Inflation

Abstract

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.

Comments: 6 pages + 2 postscript figures (uses phyzzx macros) For proceedings of the ASTPART conference held in Stockholm, Sweden in September 1994