Determination of the Equation of State of the Universe Using ∼0.1 Hz Gravitational Wave Detectors
Determination of the Equation of State of the Universe Using ∼0.1 Hz Gravitational Wave Detectors
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DOI：
10.1143/ptp.113.63
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发表时间：
2004-08
影响因子：
--
通讯作者：
R. Takahashi;Takashi Nakamura
中科院分区：
文献类型：
--
作者：
R. Takahashi;Takashi Nakamura
We show that a ten year operation of the ultimate DECIGO (DECihertz Interferometer Gravitational wave Observatory) could determine the cosmic equation of state with 0.06%, 0.08% and 0.06% accuracies for Ω m , Ω w and w, respectively, while a one year operation could do so with 3%, 4% and 3% accuracies. In the more realistic case of a practical DECIGO or BBO (Big Bang Observer), w should be determined within ∼ 10% by a ten year observation assuming the flat universe model. Hence, a DECIGO or BBO should give an independent determination of the cosmic equation of state.
