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arXiv 2004.13745hep-thgr-qc
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有边界的膨胀子引力:从么正性到黑洞蒸发

Dilaton gravity with a boundary: from unitarity to black hole evaporation

Maxim Fitkevich, Dmitry Levkov, Yegor Zenkevich

摘要:

我们指出,二维Russo-Susskind-Thorlacius(JT)蒸发黑洞模型在全量子水平上局部等价于最近被证明是幺正的平空间Jackiw-Teitelboim(JT)引力.在全局上,这两个模型的不同之处在于,反射时空边界被添加到了反射时空模型中。把边界看作量子JT理论的局部协变变形,我们发展了蒸发黑洞黑洞的合理的半经典描述。然而,我们的半经典解决方案未能解决的信息恢复问题,他们并不表示残留物的形成。这意味着,要么是标准的半经典方法错误地描述了蒸发过程,要么是双曲边界使平坦空间JT模型从根本上不一致。

英文摘要:

We point out that two-dimensional Russo-Susskind-Thorlacius (RST) model for evaporating black holes is locally equivalent - at the full quantum level - to flat-space Jackiw-Teitelboim (JT) gravity that was recently shown to be unitary. Globally, the two models differ by a reflective spacetime boundary added in the RST model. Treating the boundary as a local and covariant deformation of quantum JT theory, we develop sensible semiclassical description of evaporating RST black holes. Nevertheless, our semiclassical solutions fail to resolve the information recovery problem, and they do not indicate formation of remnants. This means that either the standard semiclassical method incorrectly describes the evaporation process or the RST boundary makes the flat-space JT model fundamentally inconsistent.

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