Effects of Compactification in D-brane Inflation
- School of Natural Sciences, Institute for Advanced Study, Princeton, New Jersey 08540 (United States)
- Kavli Institute for Theoretical Physics, Santa Barbara, California 93106 (United States)
- Department of Physics and PCTS, Princeton University, Princeton, New Jersey 08544 (United States)
- Department of Physics, Cornell University, Ithaca, New York 14853 (United States)
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.
- OSTI ID:
- 21410430
- Journal Information:
- Physical Review Letters, Vol. 104, Issue 25; Other Information: DOI: 10.1103/PhysRevLett.104.251602; (c) 2010 The American Physical Society; ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
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