Quintessence from shape moduli

Marco Peloso, Erich Poppitz

Research output: Contribution to journalArticlepeer-review

28 Scopus citations

Abstract

We show that shape moduli in submillimeter extra dimensional scenarios, addressing the gauge hierarchy problem, can dominate the energy density of the Universe today. In our scenario, the volume of the extra dimensions is stabilized at a sufficiently high scale to avoid conflicts with nucleosynthesis and solar-system precision gravity experiments, while the shape moduli remain light but couple extremely weakly to brane-localized matter and easily avoid these bounds. Nonlocal effects in the bulk of the extra dimensions generate a potential for the shape moduli. The potential has the right form and order of magnitude to account for the present day cosmic acceleration, in a way analogous to models of quintessence as a pseudo Nambu-Goldstone boson.

Original languageEnglish (US)
Article number125009
JournalPhysical Review D
Volume68
Issue number12
DOIs
StatePublished - 2003

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