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arXiv 1002.4039hep-thgr-qc
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欧氏量子引力中的熵力及其涨落

Entropic force and its fluctuation in Euclidian quantum gravity

Yue Zhao

摘要:

本文研究了Verlinde提出的引力是熵力的观点。通过应用引力理论与对偶场论的配分函数之间的一致性,发现引力可以从其对偶场论方面引起的熵的变化来计算。与Verlinde的计算不同,我们的方法不依赖于能量均分等其他假设,因此它是对熵力思想的安全检查。同时,我们也展示了如何从引力的角度用类似的方法导出熵力,这将为更好地理解规范/引力对偶性提供一个线索。最后,我们研究了力的涨落,发现作用在点粒子上的涨落永远不会大于力的期望值。对于AdS空间中的黑洞,通过规范/引力对偶,涨落是由共形边界上的场论的热涨落引起的。对于平坦空间中的黑洞度规,涨落与力的比值在无穷远处趋于常数$\frac{T}{m}$。.

英文摘要:

In this paper, we study the idea about gravity as entropic force proposed by Verlinde. By applying the identification between partition functions of gravity theory and the dual field theory, we find the gravitational force can be calculated from the changing of entropy induced from its dual field theory side. Unlike Verlinde's calculation, our method does not depend on other assumptions such as equipartition of energy, so it is a safe check on the entropic force idea. Also we show how entropic force can be derived by similar method from gravity side along, which will provide a clue to a better understanding on the gauge/gravity duality. At last, we study the fluctuation of the force, and we find the fluctuation acting on the point-like particle can never be larger than the expectation value of the force. For black hole in AdS space, by gauge/gravity duality, the fluctuation is induced by thermal fluctuation from field theory living on conformal boundary. And for the metric of black hole in flat space, the ratio between fluctuation and force goes to a constant$\frac{T}{m}$ at infinity. .

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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