Charge instability of JMaRT geometries.

Autor: Bianchi, Massimo, Di Benedetto, Carlo, Di Russo, Giorgio, Sudano, Giuseppe
Zdroj: Journal of High Energy Physics; Sep2023, Vol. 2023 Issue 9, p1-23, 23p
Abstrakt: We perform a detailed study of linear perturbations of the JMaRT family of non-BPS smooth horizonless solutions of type IIB supergravity beyond the near-decoupling limit. In addition to the unstable quasi normal modes (QNMs) responsible for the ergo-region instability, already studied in the literature, we find a new class of ‘charged’ unstable modes with positive imaginary part, that can be interpreted in terms of the emission of charged (scalar) quanta with non zero KK momentum. We use both matched asymptotic expansions and numerical integration methods. Moreover, we exploit the recently discovered correspondence between JMaRT perturbation theory, governed by a Reduced Confluent Heun Equation, and the quantum Seiberg-Witten (SW) curve of N = 2 SYM theory with gauge group SU(2) and Nf = (0, 2) flavours. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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