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arXiv 0904.2765hep-th
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焓与AdS黑洞的力学

Enthalpy and the Mechanics of AdS Black Holes

David Kastor, Sourya Ray, Jennie Traschen

摘要:

我们提出了静态AdS黑洞的Smarr公式的几何推导和扩展的第一定律,其中包括宇宙学常数的变化。这两个结果通过基于欧拉定理的标度论证进一步相关。结构中的关键新成分是静态Killing场的两种形式的势。Killing势的表面积分决定了第一定律中宇宙学常数的变化系数。这个系数与AdS黑洞视界外区域的有限有效体积成比例,也可以解释为减去被黑洞视界从空间切片中排除的体积。这个有效体积也有助于Smarr公式。由于宇宙学常数自然地被认为是压力,第一定律中的新项具有有效体积乘以压力变化的形式,这是在经典热力学中焓的变化中产生的。这个和相关的论证表明,AdS黑洞的质量应该被解释为时空的焓。

英文摘要:

We present geometric derivations of the Smarr formula for static AdS black holes and an expanded first law that includes variations in the cosmological constant. These two results are further related by a scaling argument based on Euler's theorem. The key new ingredient in the constructions is a two-form potential for the static Killing field. Surface integrals of the Killing potential determine the coefficient of the variation of the cosmological constant in the first law. This coefficient is proportional to a finite, effective volume for the region outside the AdS black hole horizon, which can also be interpreted as minus the volume excluded from a spatial slice by the black hole horizon. This effective volume also contributes to the Smarr formula. Since the cosmological constant is naturally thought of as a pressure, the new term in the first law has the form of effective volume times change in pressure that arises in the variation of the enthalpy in classical thermodynamics. This and related arguments suggest that the mass of an AdS black hole should be interpreted as the enthalpy of the spacetime.

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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