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arXiv 0705.2131gr-qcastro-phhep-th
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暗能量:一个统一的观点

Dark Energy: A Unifying View

Winfried Zimdahl

摘要:

假设描述宇宙加速膨胀的现阶段的宇宙底层的不同模型,如$Λ$ CDM模型或查伯金气体,可以被视为全息暗能量宇宙学的特殊实现,如果认真对待无压暗物质和暗能量之间相互作用的选择。相应的相互作用强度参数起着宇宙学常数的作用。差异发生在微扰水平。特别地,压力扰动本质上是非绝热的。

英文摘要:

Different models of the cosmic substratum which pretend to describe the present stage of accelerated expansion of the Universe like the $Λ$CDM model or a Chaplygin gas, can be seen as special realizations of a holographic dark energy cosmology if the option of an interaction between pressurless dark matter and dark energy is taken seriously. The corresponding interaction strength parameter plays the role of a cosmological constant. Differences occur at the perturbative level. In particular, the pressure perturbations are intrinsically non-adiabatic.

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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