### 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 language | English (US) |
---|---|

Pages (from-to) | 284-294 |

Number of pages | 11 |

Journal | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics |

Volume | 590 |

Issue number | 3-4 |

DOIs | |

State | Published - Jun 24 2004 |

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### All Science Journal Classification (ASJC) codes

- Nuclear and High Energy Physics

### Cite this

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*Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics*, vol. 590, no. 3-4, pp. 284-294. https://doi.org/10.1016/j.physletb.2004.03.082

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

Research output: Contribution to journal › Article

TY - JOUR

T1 - Inflation in warped geometries

AU - Buchel, Alex

AU - Roiban, Radu

PY - 2004/6/24

Y1 - 2004/6/24

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=2542439642&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=2542439642&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2004.03.082

DO - 10.1016/j.physletb.2004.03.082

M3 - Article

VL - 590

SP - 284

EP - 294

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

SN - 0370-2693

IS - 3-4

ER -