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arXiv 1003.4811hep-thastro-ph.COastro-ph.HEgr-qc
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暗能量、黑洞熵和量子引力的首次精确测量

Dark Energy, Black Hole Entropy, and the First Precision Measurement in Quantum Gravity

Niayesh Afshordi

摘要:

暗能量(或后期宇宙加速)和量子引力这两种明显不同的现象在极低能量和极高能量的物理学中占据主导地位,但似乎没有任何明显的经验联系。然而,通过宇宙学常数问题,两者在理论上有联系。我认为,有限温度量子引力修正黑洞熵产生的引力真空(或引力以太)的压力。假设相对修正在视界温度上是线性的(即被普朗克能量的一个幂所抑制),那么对于天体物理学上的黑洞来说,压力与暗能量的压力相当。这意味着对晚期宇宙加速的观测可能为我们提供了第一个精确测量量子引力的方法,也就是黑洞熵的方法。

英文摘要:

The two apparently distinct phenomena of dark energy (or late-time cosmic acceleration) and quantum gravity dominate physics on extremely low, and extremely high energies, but do not seem to have any apparent empirical connection. Nevertheless, the two have a theoretical connection, through the cosmological constant problem. I argue that the finite temperature quantum gravitational corrections to black hole entropy yields a pressure for the gravitational vacuum (or gravitational aether). Assuming that the relative corrections are linear in horizon temperature (i.e. are suppressed by one power of Planck energy), the pressure is comparable to that of dark energy for astrophysical black holes. This implies that the observation of late-time cosmic acceleration may have provided us with the first precision measurement of quantum gravity, i.e. that of black hole entropy.

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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