| Dark Energy Density in Brane World |
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| 作者姓名： | 温海豹 黄新兵 |
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| 作者单位： | [1]InstituteofHighEnergyPhysics,ChineseAcademyofSciences,POBox918（4）,Beijing100049／／GraduateSchooloftheChineseAcademyofSciences,Beijing100049 [2]DepartmentofPhysics,PekingUniversity,Beijing100871 |
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| 摘 要： | We present a possible explanation to the tiny positive cosmological constant under the frame of AdS5 spacetime embedded by a dS4 brahe. 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 brahe is obtained, which is smaller than the observational value. The reasons are also discussed.
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| 关 键 词： | 暗能量密度 Brane世界 宇宙论 AdS5时空 整体纯量场 |
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