The Giant Inflaton

Details The Giant Inflaton The Giant Inflaton

2004-03-11

arxiv.org/abs/hep-th/0403123v2

JHEP 0405:017,2004

Physics

High Energy Physics

High Energy Physics - Theory

31 pages, 4 figures, LaTeX. v2: references added, typos fixed

Scientific paper

10.1088/1126-6708/2004/05/017

We investigate a new mechanism for realizing slow roll inflation in string theory, based on the dynamics of p anti-D3 branes in a class of mildly warped flux compactifications. Attracted to the bottom of a warped conifold throat, the anti-branes then cluster due to a novel mechanism wherein the background flux polarizes in an attempt to screen them. Once they are sufficiently close, the M units of flux cause the anti-branes to expand into a fuzzy NS5-brane, which for rather generic choices of p/M will unwrap around the geometry, decaying into D3-branes via a classical process. We find that the effective potential governing this evolution possesses several epochs that can potentially support slow-roll inflation, provided the process can be arranged to take place at a high enough energy scale, of about one or two orders of magnitude below the Planck energy; this scale, however, lies just outside the bounds of our approximations.

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