Compactification, Vacuum Energy and Quintessence

Details Compactification, Vacuum Energy and Quintessence Compactification, Vacuum Energy and Quintessence

1999-05-20

arxiv.org/abs/gr-qc/9905075v1

Gen.Rel.Grav. 31 (1999) 1461-1472

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

15 pages, Latex, Third Award in 1999 Essay Competition of the Gravity Research Foundation

Scientific paper

We study the possibility that the vacuum energy density of scalar and internal-space gauge fields arising from the process of dimensional reduction of higher dimensional gravity theories plays the role of quintessence. We show that, for the multidimensional Einstein-Yang-Mills system compactified on a $R \times S^3 \times S^d$ topology, there are classically stable solutions such that the observed accelerated expansion of the Universe at present can be accounted for without upsetting structure formation scenarios or violating observational bounds on the vacuum energy density.

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