Assisted chaotic inflation in higher dimensional theories

Panagiota Kanti, Keith A. Olive

Research output: Contribution to journalArticlepeer-review

96 Scopus citations

Abstract

We address the problem of the large initial field values in chaotic inflation and propose a remedy in the framework of the so-called assisted inflation. We demonstrate that a 4-dimensional theory of multiple, scalar fields with initial field values considerably below the Planck scale, can give rise to inflation even though none of the individual scalar fields are capable of driving inflation. The problems arising from the presence of possible non-renormalizable interactions is therefore removed. As a concrete example of a theory with multiple scalar fields, we consider a (4 + d)-dimensional field theory of a single, non-interacting massive scalar field whose KK modes play the role of the assisted sector. For the KK modes to assist inflation, the extra dimensions must have a size larger than the inverse (4D) Planck scale.

Original languageEnglish (US)
Pages (from-to)192-198
Number of pages7
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume464
Issue number3-4
DOIs
StatePublished - 1999

Bibliographical note

Funding Information:
This work was supported in part by DOE grant DE-FG02-94ER40823 at Minnesota.

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