A stringy glimpse into the black hole horizon
Nissan Itzhaki, Lior Liram

TL;DR
This paper discusses how non-perturbative effects in string theory modify the classical structure of 2D black holes, potentially offering insights into quantum black holes in higher-dimensional spacetimes like AdS5×S5.
Contribution
It demonstrates that non-perturbative string effects make the region behind the horizon singular at the classical level, providing a new perspective on quantum black holes.
Findings
Non-perturbative effects induce classical singularities behind the horizon.
The 2D black hole model offers insights into higher-dimensional quantum black holes.
Classical analysis reveals horizon modifications due to stringy effects.
Abstract
We elaborate on the recent claim [arXiv:1702.03583] that non-perturbative effects in , which are at the core of the FZZ duality, render the region just behind the horizon of the black hole singular already at the classical level (). We argue that the 2D classical black hole could shed some light on quantum black holes in higher dimensions including large black holes in .
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