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arXiv 0709.0073gr-qc
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物质-暗能量耦合的静态宇宙模型

Static Universe model existing due to the Matter-Dark Energy coupling

Alejandro Cabo Bizet, Alejandro Cabo Montes de Oca

摘要:

这项工作研究了一个静态的,各向同性的,几乎均匀的宇宙包含一个真正的标量场模拟暗能量(quintaessence)与无压物质相互作用。有人认为,物质和暗能量之间的相互作用,是必不可少的考虑解决方案的存在。假设暗能量可以由膨胀子(一个反映零角动量弦态凝聚的标量场)提供,我们将原点处的标量场的值固定为普朗克尺度。可以将暗能量与物质能量的比值固定在目前估计的0.7/0.3,以及观测到的哈勃常数的大小。为固定上述比值和哈勃效应强度而选择的标量场的质量值约为10^{-29}cm^{-1},这是一个很小的质量,在最低近似值下似乎与膨胀子的零质量相容。

英文摘要:

The work investigate a static, isotropic and almost homogeneous Universe containing a real scalar field modeling the Dark-Energy (quintaessence) interacting with pressureless matter. It is argued that the interaction between matter and the Dark Energy, is essential for the very existence of the considered solution. Assuming the possibility that Dark-Energy can be furnished by the Dilaton (a scalar field reflecting the condensation of string states with zero angular momentum) we fix the value of scalar field at the origin to the Planck scale. It became possible to fix the ratio of the amount of Dark Energy to matter energy, in the currently estimated value 0.7/0.3, and also the observed magnitude of the Hubble constant. The value of the mass for the scalar field chosen for fixing the above ratio and Hubble effect strength, results to be of the order of 10^{-29}cm^{-1}, a small mass which seems to be compatible with the zero mass of the Dilaton in the lowest approximations.

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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