Islands and light gravitons in type IIB string theory
Islands and light gravitons in type IIB string theory
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IIB 型弦理论中的岛屿和轻引力子
DOI：
10.1007/jhep02(2023)016
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发表时间：
2022
影响因子：
5.4
通讯作者：
D. Lust
中科院分区：
文献类型：
--
作者：
Saskia Demulder;A. Gnecchi;Ioannis Lavdas;D. Lust
我们考虑了嵌入IIB型弦理论的ADS_4中与外池耦合的黑洞的建立。我们在这些背景下研究量子极值岛，与大质量引力子的存在有关。利用弦理论中ADS_4质量引力微观嵌入的显式结果，我们研究了是否有可能获得极值岛的背景，在极值岛中，最低躺着的引力子只有轻微的质量。对于某些区域的微观参数，可以显式计算引力子质量，并解释它是如何直接影响岛的存在和性质的。我们还表明，在质量重力有效场理论的有效性范围内，岛屿原则上可以存在。然而，我们通过数值计算看到，在零温度下量子极值岛的存在受到高度限制，当允许伸缩子变化时也是如此，因此引力子的质量不能任意变轻。在有限温度下，我们还确定了一个临界参数，在该参数的上方和下方仍然存在岛屿，但表现出不同的行为。我们的工作支持了最近的观点，即高维黑洞的么正演化，更准确地说，它们的Page曲线，依赖于有效理论中大质量引力子的存在。
We consider the setup of a black hole in AdS_4 coupled to an external bath, embedded in type IIB string theory. We study quantum extremal islands in these backgrounds, in relation to the existence of a massive graviton. Using explicit results of the microscopic embedding of AdS_4 massive gravity in string theory, we investigate whether it is possible to achieve backgrounds with extremal islands, in which the lowest lying graviton is only slightly massive. For certain regions of the microscopic parameters, the graviton mass can be computed explicitly, and we explain how it directly affects the existence and the properties of the islands. We also show that islands can in principle exist within the regime of validity of the massive gravity effective field theory. However we see via numerical computations that the existence of quantum extremal islands at zero temperature is highly constrained, also when the dilaton is allowed to vary, so that the mass of the graviton cannot be made arbitrarily light. At finite temperature, we also identify a critical parameter, above and below which islands still exist but exhibit a different behavior. Our work supports recent proposals that the unitary evolution of black holes in higher dimensions, and more precisely their Page curve, relies on the presence of a massive graviton in the effective theory.
影响因子：
5.4
作者：
H. Geng;A. Karch;Carlos Perez-Pardavila;S. Raju;L. Randall;Marcos Riojas;Sanjit Shashi
通讯作者：
H. Geng;A. Karch;Carlos Perez-Pardavila;S. Raju;L. Randall;Marcos Riojas;Sanjit Shashi
影响因子：
5.5
作者：
Ahmed Almheiri;R. Mahajan;Jorge E Santos
通讯作者：
Ahmed Almheiri;R. Mahajan;Jorge E Santos
影响因子：
5.4
作者：
Almheiri, Ahmed;Engelhardt, Netta;Maxfield, Henry
通讯作者：
Maxfield, Henry