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arXiv 1802.02199hep-thastro-ph.COgr-qc
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由有限尺寸效应和Schwarzschild黑洞情形建立囚禁引力子的线性状态方程

Building a linear equation of state for trapped gravitons from finite size effects and the Schwarzschild black hole case

Stefano Viaggiu

摘要:

在本文中,我们继续目前在\cite{1}和\cite{2}的调查有关的频谱被困引力子在一个球形的盒子,特别是在史瓦西黑洞(BH)。我们探讨的可能性,由于有限的尺寸效应,捕获的引力子的辐射的频率可以修改这样一种方式,一个线性状态方程$PV=γU$的压力$P$和内部能量$U$的出现。首先,我们研究了$U\sim R$的情况,其中只有$γ>-\frac{1}{3}$的流体是可能的。如果将修正$\sim 1/R$添加到$U$中,对于$γ\in[0,\frac{1}{3}]$,我们发现捕获球$R$的面积半径的允许值没有限制。此外,对于$γ>\frac{1}{3}$,我们有一个普朗克长度$L_P$量级的$R$的最小允许值。相反,可以获得具有$P<0$的流体,但具有$R$的最大允许值。随着附加项看起来像BH内能$U$的$\sim 1/R$,对于任何线性状态方程,对BH熵的众所周知的对数修正自然出现。本文的结果表明,有限尺寸效应可以改变引力子内部的辐射结构,从而揭示了辐射转化为暗能量的可能机制。

英文摘要:

In this paper we continue the investigations present in \cite{1} and \cite{2} concerning the spectrum of trapped gravitons in a spherical box, and in particular inside a Schwarzschild black hole (BH). We explore the possibility that, due to finite size effects, the frequency of the radiation made of trapped gravitons can be modified in such a way that a linear equation of state $PV=γU$ for the pressure $P$ and the internal energy $U$ arises. Firstly, we study the case with $U\sim R$, where only fluids with $γ>-\frac{1}{3}$ are possible. If corrections $\sim 1/R$ are added to $U$, for $γ\in[0,\frac{1}{3}]$ we found no limitation on the allowed value for the areal radius of the trapped sphere $R$. Moreover, for $γ>\frac{1}{3}$ we have a minimum allowed value for $R$ of the order of the Planck length $L_P$. Conversely, a fluid with $P<0$ can be obtained but with a maximum allowed value for $R$. With the added term looking like $\sim 1/R$ to the BH internal energy $U$, the well known logarithmic corrections to the BH entropy naturally emerge for any linear equation of state. The results of this paper suggest that finite size effects could modify the structure of graviton's radiation inside, showing a possible mechanism to transform radiation into dark energy.

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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