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arXiv 1202.2301gr-qc
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圈黑洞的正则配分函数

Canonical Partition function of Loop Black Holes

Kinjalk Lochan, Cenalo Vaz

摘要:

我们用圈量子引力(LQG)方法计算了量子黑洞的正则配分。我们认为,任何量子理论的引力,其中的视界面积是建立在非相互作用的成分不能产生定性的修正的贝肯斯坦-霍金(B-H)面积法,但修正的面积法可以作为一个结果,额外的约束诱导组分之间的相互作用。在LQG中,这是通过要求球面视野来实现的。LQG的正则方法有利于对系数为-1/2的B-H定律进行对数校正,与面积谱无关。我们最初的计算的配分函数使用某些近似,我们表明,不定性地影响黑洞熵的表达。随后我们讨论了当简化近似放松和处理全LQG谱时对这些结果的定量修正。我们展示了如何这些修正可以恢复到所有订单微扰理论。然而,摄动级数的收敛性质仍然是未知的。

英文摘要:

We compute the canonical partition for quantum black holes in the approach of Loop Quantum Gravity (LQG). We argue that any quantum theory of gravity in which the horizon area is built of non-interacting constituents cannot yield qualitative corrections to the Bekenstein-Hawking (B-H) area law, but corrections to the area law can arise as a consequence additional constraints inducing interactions between the constituents. In LQG this is implemented by requiring spherical horizons. The canonical approach for LQG favours a logarithmic correction to the B-H law with a coefficient of -1/2, independently of the area spectrum. Our initial calculation of the partition function uses certain approximations that, we show, do not qualitatively affect the expression for the black hole entropy. We later discuss the quantitative corrections to these results when the simplifying approximations are relaxed and the full LQG spectrum is dealt with. We show how these corrections can be recovered to all orders in perturbation theory. However, the convergence properties of the perturbative series remains unknown.

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