Open Inflation View Full Text


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Chapter Info

DATE

2000-12-21

AUTHORS

S.W. Hawking

ABSTRACT

In February this year, Neil Turok and I proposed a new model for inflation. The distinctive feature was that it produced an infinite, open universe, yet it satisfied the no boundary condition and came from an instanton of finite size, with a mass of the order of one gram. Our paper aroused a lot of interest, as shown by 37 citations on HEP-TH, but it brought a lot of opposition. This centered on three features of our model.First, we were attacked for using the no boundary proposal. People like Linde and Vilenkin, claimed that one should use the quantum tunneling wave function instead.Second, we were criticized because our instanton contained a singularity. It was said this was contrary to the spirit of the no boundary proposal; that the singularity would be naked and would make the universe non predictable. Third, we invoked the anthropic principle, to avoid the model predicting a totally empty universe. We were attacked both for using anthropic arguments, and for the very low value for the density of the universe, that they seemed to lead to.In this talk, I will describe the open inflation model that Neil and I proposed, and answer some of the objections that have been raised. More... »

PAGES

180-190

Book

TITLE

Mathematical and Quantum Aspects of Relativity and Cosmology

ISBN

978-3-540-66865-7
978-3-540-46671-0

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/3-540-46671-1_7

DOI

http://dx.doi.org/10.1007/3-540-46671-1_7

DIMENSIONS

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