The giant inflaton

Oliver DeWolfe, Herman Verlinde, Shamit Kachru

Research output: Contribution to journalArticlepeer-review

86 Scopus citations


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.

Original languageEnglish (US)
Pages (from-to)347-374
Number of pages28
JournalJournal of High Energy Physics
Issue number5
StatePublished - May 1 2004

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics


  • Physics of the Early Universe
  • Superstring Vacua


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