Inflation in warped geometries

Alex Buchel, Radu Roiban

Research output: Contribution to journalArticle

41 Citations (Scopus)

Abstract

We argue that brane anti-brane inflation in string theory de-Sitter vacua of Kachru-Kallosh-Linde-Trivedi (KKLT) is captured by the dynamics of a D3-brane probe in the local KKLT model constructed in hep-th/0203041. This provides a framework to study in a controllable way corrections to the inflationary slow roll parameter η due to conformal symmetry breaking in a warped geometry throat. We compute the leading correction to η for the inflation in the Klebanov-Tseytlin throat geometry. We find that in certain regime this correction tends to decrease η. Computations in a different regime suggest however that it is unlikely that η≪1 can be achieved with the D3-brane throat inflation.

Original languageEnglish (US)
Pages (from-to)284-294
Number of pages11
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume590
Issue number3-4
DOIs
StatePublished - Jun 24 2004

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throats
geometry
string theory
broken symmetry
probes

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

Cite this

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Inflation in warped geometries. / Buchel, Alex; Roiban, Radu.

In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 590, No. 3-4, 24.06.2004, p. 284-294.

Research output: Contribution to journalArticle

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AU - Roiban, Radu

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