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Probability distribution for Ω in open-universe inflation

Probability distribution for Ω in open-universe inflation The problem of making predictions in an eternally inflating universe that thermalizes by bubble nucleation is considered. A recently introduced regularization procedure is applied to find the probability distribution for the ensemble of thermalized bubbles. The resulting probabilities are shown to be independent of the choice of the time parametrization. This formalism is applied to models of open “hybrid” inflation with Ω < 1 . Depending on the parameters of the model, the probability distribution for Ω is found to have a peak either very close to Ω = 1 , or at an intermediate value of Ω in the range 0.03 ≲ Ω < 1 . http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review D American Physical Society (APS)

Probability distribution for Ω in open-universe inflation

Physical Review D , Volume 55 (2) – Jan 15, 1997
12 pages

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Publisher
American Physical Society (APS)
Copyright
Copyright © 1997 The American Physical Society
ISSN
1089-4918
DOI
10.1103/PhysRevD.55.548
Publisher site
See Article on Publisher Site

Abstract

The problem of making predictions in an eternally inflating universe that thermalizes by bubble nucleation is considered. A recently introduced regularization procedure is applied to find the probability distribution for the ensemble of thermalized bubbles. The resulting probabilities are shown to be independent of the choice of the time parametrization. This formalism is applied to models of open “hybrid” inflation with Ω < 1 . Depending on the parameters of the model, the probability distribution for Ω is found to have a peak either very close to Ω = 1 , or at an intermediate value of Ω in the range 0.03 ≲ Ω < 1 .

Journal

Physical Review DAmerican Physical Society (APS)

Published: Jan 15, 1997

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