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arXiv 1407.0125gr-qc
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类de Sitter背景对增加暗能量零点收支的影响

The effect of de Sitter like background on increasing the zero point budget of dark energy

Haidar Sheikhahmadi, Ali Aghamohammadi, Khaled Saaidi

摘要:

利用减法重整化机制,研究了类deSitter背景下玻色标量场的零点量子涨落。利用观测到的谱指数$n_s(k)$,得到了有质量标量场第一慢滚参数$ε$的最佳值。此外,还得到了无质量标量场真空量子涨落的能量密度。这些波动对宇宙其他组成部分的影响进行了研究。通过求解守恒方程,对一些不同的例子,得到了宇宙中不同成分的能量密度。在这种情况下,宇宙的所有组件是在相互作用,不同的耗散函数,$\tilde{Q}_{i}$,被认为是。${ρ_{DE}(z)}/{ρ_{cri}(z)}$的时间演化表明,$\tilde{Q}=3 γH(t) ρ_{m}$与包括CMB、BAO和SNeIa在内的观测资料的一致性最好。

英文摘要:

During this work, using subtraction renormalization mechanism, zero point quantum fluctuations for bosonic scalar fields in a de-Sitter like background are investigated. By virtue of the observed value for spectral index, $n_s(k)$, for massive scalar field the best value for the first slow roll parameter, $ε$, is achieved. In addition the energy density of vacuum quantum fluctuations for massless scalar field is obtained. The effects of these fluctuations on other components of the Universe are studied. By solving the conservation equation, for some different examples, the energy density for different components of the Universe are obtained. In the case which, all components of the Universe are in an interaction, the different dissipation functions, $\tilde{Q}_{i}$, are considered. The time evolution of ${ρ_{DE}(z)}/{ρ_{cri}(z)}$ shows that $\tilde{Q}=3 γH(t) ρ_{m}$ has best agreement in comparison to observational data including CMB, BAO and SNeIa data set.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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