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Inflation in AdS/CFT.

Freivogel, B. and Hubeny, V. E. and Maloney, A. and Myers, R. C. and Rangamani, M. and Shenker, S. (2006) 'Inflation in AdS/CFT.', Journal of high energy physics., 03 . 007.

Abstract

We study the AdS/CFT correspondence as a probe of inflation. We assume the existence of a string landscape containing at least one stable AdS vacuum and a (nearby) metastable de Sitter state. Standard arguments imply that the bulk physics in the vicinity of the AdS minimum is described by a boundary CFT. We argue that large enough bubbles of the dS phase, including those able to inflate, are described by mixed states in the CFT. Inflating degrees of freedom are traced over and do not appear explicitly in the boundary description. They nevertheless leave a distinct imprint on the mixed state. Analytic continuation allows us, in principle, to recover a large amount of nonperturbatively defined information about the inflating regime. Our work also shows that no scattering process can create an inflating region, even by quantum tunneling, since a pure state can never evolve into a mixed state under unitary evolution.

Item Type:Article
Keywords:AdS-CFT correspondence, dS vacua in string theory.
Full text:PDF (arXiv version) - Other (679Kb)
Status:Peer-reviewed
Publisher Web site:http://dx.doi.org/10.1088/1126-6708/2006/03/007
Publisher statement:© SISSA 2006. Published by IOP Publishing for SISSA.
Record Created:22 Feb 2008
Last Modified:06 May 2014 10:11

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