Quasinormal modes of stringy black holes

TL;DR

This paper investigates the quasinormal modes of stringy black holes in various dimensions using semi-analytic, WKB, and numerical methods, revealing their role in late-time gravitational oscillations.

Contribution

It provides the first comprehensive analysis of QNMs for 1+1 and 1+3 dimensional stringy black holes using multiple computational approaches.

Findings

QNMs dominate late-time gravitational oscillations.

Semi-analytic and numerical methods yield consistent QNM results.

Stringy black holes exhibit characteristic oscillation patterns.

Abstract

String theory is a promising candidate for a fundamental quantum theory of all interactions including Einstein gravity. Some solutions in string theory can be interpreted as black holes. Using the semi-analytic method and WKB method,the quasinormal modes(QNMs)of 1+1 dimensional black hole in string theory are studied.The QNMs of 1+3 dimensional black hole in string theory are also calculated through numerical approach.The numerical investigation has shown that the late time gravitational oscillation of the black hole under an external perturbaton is dominated by certain QNMs.