Evolutionary effects in one-bubble open inflation for string landscape

Daisuke Yamauchi, Andrei Linde, Atsushi Naruko, Misao Sasaki, Takahiro Tanaka

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The open inflationary scenario is attracting a renewed interest in the context of string landscape. Since there are a large number of metastable de Sitter vacua in string landscape, tunneling transitions to lower metastable vacua through the bubble nucleation occur quite naturally, which leads to a natural realization of open inflation. We argued that the effect of the small deviation of the density parameter on the large angle CMB anisotropies may be significant for tensor-type perturbation in open inflation scenario. We found that the square amplitude for tensor-perturbation is determined not by the Hubble of the false vacuum directly but by that of the true vacuum even for sufficiently steep slope. Also we found that the tracking behavior can appear when one can choose the exponential-type potential with tuned parameters.

Original languageEnglish
Title of host publication12th Marcel Grossmann Meeting on Recent Dev. in Theoretical and Experimental General Relativity, Astrophysics and Relativistic Field Theories - Proc. of the MG 2009 Meeting on General Relativity
PublisherWorld Scientific Publishing Co. Pte Ltd
Pages2252-2254
Number of pages3
ISBN (Print)9814374512, 9789814374514
DOIs
Publication statusPublished - 2012
Event12th Marcel Grossmann Meeting on Recent Developments in Theoretical and Experimental General Relativity, Astrophysics and Relativistic Field Theories, MG 2009 - Paris, France
Duration: 2009 Jul 122009 Jul 18

Publication series

Name12th Marcel Grossmann Meeting on Recent Dev. in Theoretical and Experimental General Relativity, Astrophysics and Relativistic Field Theories - Proc. of the MG 2009 Meeting on General Relativity

Other

Other12th Marcel Grossmann Meeting on Recent Developments in Theoretical and Experimental General Relativity, Astrophysics and Relativistic Field Theories, MG 2009
Country/TerritoryFrance
CityParis
Period09/7/1209/7/18

Keywords

  • Inflation
  • String landscape

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Nuclear and High Energy Physics

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