Uncertainties of predictions in models of eternal inflation

Details Uncertainties of predictions in models of eternal inflation Uncertainties of predictions in models of eternal inflation

1995-10-26

arxiv.org/abs/gr-qc/9510054v2

Phys.Rev. D53 (1996) 4298-4310

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

30 pages, RevTeX, figure included, added some references and Comments on recent proposal (gr-qc/9511058) of alternative regula

Scientific paper

10.1103/PhysRevD.53.4298

In a previous paper \cite{MakingPredictions}, a method of comparing the volumes of thermalized regions in eternally inflating universe was introduced. In this paper, we investigate the dependence of the results obtained through that method on the choice of the time variable and factor ordering in the diffusion equation that describes the evolution of eternally inflating universes. It is shown, both analytically and numerically, that the variation of the results due to factor ordering ambiguity inherent in the model is of the same order as their variation due to the choice of the time variable. Therefore, the results are, within their accuracy, free of the spurious dependence on the time parametrization.

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