dc.contributor.author Carroll, Sean M. dc.contributor.author Johnson, Matthew C. dc.contributor.author Randall, Lisa dc.date.accessioned 2012-01-25T19:49:32Z dc.date.issued 2009 dc.identifier.citation Carroll, Sean M., Matthew C. Johnson, and Lisa Randall. 2009. Dynamical compactification from de Sitter space. Journal of High Energy Physics 11: 094. en_US dc.identifier.issn 1029-8479 en_US dc.identifier.uri http://nrs.harvard.edu/urn-3:HUL.InstRepos:8052090 dc.description.abstract We show that $D$-dimensional de Sitter space is unstable to the nucleation of non-singular geometries containing spacetime regions with different numbers of macroscopic dimensions, leading to a dynamical mechanism of compactification. These and other solutions to Einstein gravity with flux and a cosmological constant are constructed by performing a dimensional reduction under the assumption of $q$-dimensional spherical symmetry in the full $D$-dimensional geometry. In addition to the familiar black holes, black branes, and compactification solutions we identify a number of new geometries, some of which are completely non-singular. The dynamical compactification mechanism populates lower-dimensional vacua very differently from false vacuum eternal inflation, which occurs entirely within the context of four-dimensions. We outline the phenomenology of the nucleation rates, finding that the dimensionality of the vacuum plays a key role and that among vacua of the same dimensionality, the rate is highest for smaller values of the cosmological constant. We consider the cosmological constant problem and propose a novel model of slow-roll inflation that is triggered by the compactification process. en_US dc.description.sponsorship Physics en_US dc.language.iso en_US en_US dc.publisher Springer en_US dc.relation.isversionof doi:10.1088/1126-6708/2009/11/094 en_US dc.relation.hasversion http://arxiv.org/abs/0904.3115 en_US dash.license OAP dc.subject flux compactifications en_US dc.subject p-branes en_US dc.subject classical theories of gravity en_US dc.subject high energy physics en_US dc.subject mathematical physics en_US dc.subject gravitation en_US dc.subject cosmology en_US dc.subject particle physics en_US dc.subject field theory en_US dc.subject astrophysics en_US dc.subject astroparticles en_US dc.subject cosmology of theories beyond the SM en_US dc.title Dynamical Compactification from de Sitter Space en_US dc.type Journal Article en_US dc.description.version Author's Original en_US dc.relation.journal Journal of High Energy Physics en_US dash.depositing.author Randall, Lisa dc.date.available 2012-01-25T19:49:32Z dc.identifier.doi 10.1088/1126-6708/2009/11/094 * dash.contributor.affiliated Randall, Lisa
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