Instability of Black Holes in AdS$_3 \times S^3$

Fuente: arXiv
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Main Authors: Larsen, Finn, Lee, Siyul
Format: Preprint
Published: 2025
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author Larsen, Finn
Lee, Siyul
author_facet Larsen, Finn
Lee, Siyul
contents Extremal and near extremal black holes are unstable, unless they are protected by supersymmetry. For black holes in AdS$_3 \times S^3$, we study the range of parameters that bound the unstable region, the fate of extremal black holes that are unstable, and the true ground state in super-selection sectors where no isolated black hole solution exists. Thermodynamics generally favors a central black hole surrounded by chiral primaries that carry a significant fraction of the conserved charges. We give a dynamical interpretation of decay, by computing the linear response functions in the dual CFT$_2$ and showing that the onset of instability agrees with thermodynamics. To understand the nature of the decay products, we construct several new families of classical string solutions. They are ``giants" that move on both the AdS$_3$ and the $S^3$, and may have interesting applications beyond those we develop.
format Preprint
id arxiv_https___arxiv_org_abs_2507_04131
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Instability of Black Holes in AdS$_3 \times S^3$
Larsen, Finn
Lee, Siyul
High Energy Physics - Theory
Extremal and near extremal black holes are unstable, unless they are protected by supersymmetry. For black holes in AdS$_3 \times S^3$, we study the range of parameters that bound the unstable region, the fate of extremal black holes that are unstable, and the true ground state in super-selection sectors where no isolated black hole solution exists. Thermodynamics generally favors a central black hole surrounded by chiral primaries that carry a significant fraction of the conserved charges. We give a dynamical interpretation of decay, by computing the linear response functions in the dual CFT$_2$ and showing that the onset of instability agrees with thermodynamics. To understand the nature of the decay products, we construct several new families of classical string solutions. They are ``giants" that move on both the AdS$_3$ and the $S^3$, and may have interesting applications beyond those we develop.
title Instability of Black Holes in AdS$_3 \times S^3$
topic High Energy Physics - Theory
url https://arxiv.org/abs/2507.04131