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arXiv 1601.03032gr-qcphysics.hist-ph
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爱因斯坦场方程在所有维中唯一性的简单证明

A Simple Proof of the Uniqueness of the Einstein Field Equation in All Dimensions

Erik Curiel

摘要:

爱因斯坦场方程唯一性的标准论证是基于洛夫洛克定理,该定理的相关陈述仅限于四维。我证明了一个定理类似洛夫洛克的,与物理修改的假设:即几何对象表示曲率的爱因斯坦场方程应该有物理尺寸的应力能量。该定理在两个方面比洛夫洛克定理更强:它在所有维度都成立,因此支持唯一性的广义论证;它没有假设所需的张量仅依赖于度量的二阶偏导数,该条件是证明的结果。这对于理解宇宙学常数的本质和高维引力理论具有重要意义。这个定理的另一个推论是,它精确地解释了在广义相对论中不可能存在引力应力-能量张量的意义。一路上,我证明了一个结果的一些兴趣有关的第二喷束束的度量在流形上。

英文摘要:

The standard argument for the uniqueness of the Einstein field equation is based on Lovelock's Theorem, the relevant statement of which is restricted to four dimensions. I prove a theorem similar to Lovelock's, with a physically modified assumption: that the geometric object representing curvature in the Einstein field equation ought to have the physical dimension of stress-energy. The theorem is stronger than Lovelock's in two ways: it holds in all dimensions, and so supports a generalized argument for uniqueness; it does not assume that the desired tensor depends on the metric only up second-order partial-derivatives, that condition being a consequence of the proof. This has consequences for understanding the nature of the cosmological constant and theories of higher-dimensional gravity. Another consequence of the theorem is that it makes precise the sense in which there can be no gravitational stress-energy tensor in general relativity. Along the way, I prove a result of some interest about the second jet-bundle of the bundle of metrics over a manifold.

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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