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Dark Energy Density in Brane World |
| WEN Hai-Bao1,2;HUANG Xin-Bing3 |
| 1Institute of High Energy Physics, Chinese Academy of Sciences, PO Box 918(4), Beijing 100049
2Graduate School of the Chinese Academy of Sciences, Beijing 100049
3Department of Physics, Peking University, Beijing 100871 |
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| Cite this article: |
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WEN Hai-Bao, HUANG Xin-Bing 2005 Chin. Phys. Lett. 22 816-819 |
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Abstract We present a possible explanation to the tiny positive cosmological constant under the frame of AdS5 spacetime embedded by a dS4 brane. We calculate the dark energy density by summing the zero point energy of massive scalar fields in AdS5 spacetime. Under the assumption that the radius of AdS5 spacetime is of the same magnitude as the radius of observable universe, the dark energy density in dS4 brane is obtained, which is smaller than the observational value. The reasons are also discussed.
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| Keywords:
04.50.+h
11.10.Kk
11.25.Mj
11.27.+d
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Published: 01 April 2005
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| PACS: |
04.50.+h
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11.10.Kk
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(Field theories in dimensions other than four)
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11.25.Mj
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(Compactification and four-dimensional models)
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11.27.+d
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(Extended classical solutions; cosmic strings, domain walls, texture)
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