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arXiv 1503.08358gr-qchep-thmath-phmath.MP
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由热力学涨落产生的极大对称时空

Maximally Symmetric Spacetimes emerging from thermodynamic fluctuations

A. Bravetti, C. S. Lopez-Monsalvo, H. Quevedo

摘要:

本文证明了广义相对论的最大对称真空解来自于统计力学的几何结构和热力学涨落理论。为了提出我们的论点,我们首先证明热力学相空间的伪黎曼结构是具有宇宙学常数的真空爱因斯坦-高斯-邦纳引力理论的解。然后,我们使用平衡态热力学的几何来证明爱因斯坦场方程的最大对称真空解- Minkowski,de-Sitter和Anti-de-Sitter时空-对应于热力学涨落。此外,我们认为,这些可能是唯一可能的解决方案,可以得出这种方式。因此,这里给出的结果是在没有任何进一步假设的情况下,从未指定微观理论的热力学极限有效地出现的时空的第一个具体例子。

英文摘要:

In this work we prove that the maximally symmetric vacuum solutions of General Relativity emerge from the geometric structure of statistical mechanics and thermodynamic fluctuation theory. To present our argument, we begin by showing that the pseudo-Riemannian structure of the Thermodynamic Phase Space is a solution to the vacuum Einstein-Gauss-Bonnet theory of gravity with a cosmological constant. Then, we use the geometry of equilibrium thermodynamics to demonstrate that the maximally symmetric vacuum solutions of Einstein's Field Equations -- Minkowski, de-Sitter and Anti-de-Sitter spacetimes -- correspond to thermodynamic fluctuations. Moreover, we argue that these might be the only possible solutions that can be derived in this manner. Thus, the results presented here are the first concrete examples of spacetimes effectively emerging from the thermodynamic limit over an unspecified microscopic theory without any further assumptions.

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