Effects of compactification in d-brane inflation

Daniel Baumann, Anatoly Dymarsky, Shamit Kachru, Igor R. Klebanov, Liam McAllister

Research output: Contribution to journalArticlepeer-review

26 Scopus citations

Abstract

In D3-brane inflation, the inflaton potential receives important contributions from sources in the compact space, such as fluxes, other D-branes, and orientifold planes. Most previous analyses have considered only the effects of sources near to the inflationary D3-brane, but in fact distant sources do not generically decouple and can critically influence the dynamics during inflation. We provide a systematic method for incorporating the effects of arbitrary distant sources as perturbations to the local supergravity background. We use this approach to obtain the structure of the potential for a D3-brane in a warped throat geometry attached to a general compact space. A significant, and well-known, contribution to this potential arises from quantum effects involved in the stabilization of the compactification volume. Our method automatically captures these effects, encoding them in a suitable flux background.

Original languageEnglish
Article number251602
JournalPhysical Review Letters
Volume104
Issue number25
DOIs
StatePublished - Jun 25 2010

Funding

FundersFunder number
Science and Technology Facilities CouncilST/G000581/1, ST/J000434/1
U.S. Department of Energy Chinese Academy of Sciences Guangzhou Municipal Science and Technology Project Oak Ridge National Laboratory Extreme Science and Engineering Discovery Environment National Science Foundation National Energy Research Scientific Computing Center National Natural Science Foundation of China0855425, 0551164, 0756966, 0757868

    ASJC Scopus subject areas

    • General Physics and Astronomy

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