Bounds on the local energy density of holographic CFTs from bulk geometry

Bounds on the local energy density of holographic CFTs from bulk geometry
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来自体几何的全息 CFT 局部能量密度的界限

DOI:
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发表时间:
2016
期刊:
影响因子:
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通讯作者:
T. Wiseman
T. Wiseman
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作者:
S. Fischetti;Andrew Hickling;T. Wiseman

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应力张量是任何场论中的基本局部算子;在AdS/CFT的上下文中,它是与体几何本身对偶的算子。在这里,我们利用这个功能,通过使用散装几何放置在静态的全息(2+1)维CFTs生活在一个封闭的(但一般弯曲)空间几何的局部能量密度的约束。我们允许存在一个边际标量变形,对偶的无质量标量场的散装。对于某些真空状态,其中的体积几何是良好的表现在零温度下,我们发现,散装运动方程意味着,在特定的边界域的局部能量密度集成是负的。在没有标量变形的情况下,我们使用反平均曲率流来证明,如果CFT空间几何具有球形拓扑结构,但曲率不恒定,则局部能量密度必须在某处为正。这个结果可以推广到其他拓扑,但只适用于某些类型的真空;特别是,对于一般的环形边界,真空的体对偶必须是环形黑洞的零温度极限。
The stress tensor is a basic local operator in any field theory; in the context of AdS/CFT, it is the operator which is dual to the bulk geometry itself. Here we exploit this feature by using the bulk geometry to place constraints on the local energy density in static states of holographic (2+1)-dimensional CFTs living on a closed (but otherwise generally curved) spatial geometry. We allow for the presence of a marginal scalar deformation, dual to a massless scalar field in the bulk. For certain vacuum states in which the bulk geometry is well-behaved at zero temperature, we find that the bulk equations of motion imply that the local energy density integrated over specific boundary domains is negative. In the absence of scalar deformations, we use the inverse mean curvature flow to show that if the CFT spatial geometry has spherical topology but non-constant curvature, the local energy density must be positive somewhere. This result extends to other topologies, but only for certain types of vacuum; in particular, for a generic toroidal boundary, the vacuum’s bulk dual must be the zero-temperature limit of a toroidal black hole.
极端黑洞的近水压几何形状的分类。
DOI: 10.12942/lrr-2013-8
发表时间: 2013
影响因子: 40.6
作者:
Kunduri HK;Lucietti J
通讯作者: Lucietti J