Dark Energy Density in Brane World
arXiv:hep-th/0502078 · doi:10.1088/0256-307X/22/4/010
Abstract
We present a possible explanation to the tiny positive cosmological constant under the frame of AdS spacetime embedded by a dS brane. We calculate the dark energy density by summing the zero point energy of massive scalar fields in AdS spacetime. Under the assumption that the radius of AdS spacetime is of the same magnitude as the radius of observable universe, the dark energy density in dS brane is obtained, which is smaller than the observational value. The reasons are also discussed.
12 pages, no figures, to appear in Chin.Phys.Lett
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