Quintessence from Shape Moduli
摘要
We show that shape moduli in sub-millimeter 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 dimension 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.
引用
@article{arxiv.hep-ph/0307379,
title = {Quintessence from Shape Moduli},
author = {Marco Peloso and Erich Poppitz},
journal= {arXiv preprint arXiv:hep-ph/0307379},
year = {2009}
}
备注
8 pages, 1 figure