Hybrid Quintessence with an End or Quintessence from Branes and Large Dimensions

Details Hybrid Quintessence with an End or Quintessence from Branes and Large Dimensions Hybrid Quintessence with an End or Quintessence from Branes and Large Dimensions

2001-05-21

arxiv.org/abs/hep-ph/0105216v3

JHEP 0110:025,2001

Physics

High Energy Physics

High Energy Physics - Phenomenology

16 pages in phyzzx.tex, many minor corrections and additions, one reference added, typos corrected

Scientific paper

10.1088/1126-6708/2001/10/025

We describe a model of hybrid quintessence in which in addition to the tracker field there is a trigger field which is responsible for ending quintessence. As a result, hybrid quintessence does not suffer from the problems associated with the eternal acceleration of the universe. We derive the hybrid quintessence potential on branes from the interbrane interaction in string theory and show that it requires TeV scale strings and two millimeter size dimensions. This scenario predicts a dark energy density of $O(mm^{-4})$ and relates the smallness of this energy to the large size of the extra dimensions.

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