Stringy Horizons and UV/IR Mixing

TL;DR

This paper explores how string theory modifies black hole horizon scattering, revealing UV/IR mixing that impacts late-time behavior and may shed light on the black hole information paradox and non-locality in Little String Theory.

Contribution

It demonstrates UV/IR mixing in the $SL(2, \\mathbb{R})_k/U(1)$ black hole, connecting string effects to black hole physics and non-locality.

Findings

UV/IR mixing alters late-time black hole behavior

String theory effects modify classical scattering results

Potential implications for the black hole information puzzle

Abstract

The target-space interpretation of the exact (in $\alpha'$) reflection coefficient for scattering from Euclidean black-hole horizons in classical string theory is studied. For concreteness, we focus on the solvable $SL(2, \mathbb{R})_k/U(1)$ black hole. It is shown that it exhibits a fascinating UV/IR mixing, dramatically modifying the late-time behavior of general relativity. We speculate that this might play an important role in the black-hole information puzzle, as well as in clarifying features related with the non-locality of Little String Theory.