Scalar waves from a star orbiting a BTZ black hole

TL;DR

This paper calculates how massless scalar waves decay around BTZ black holes caused by a star's orbit and compares these results with dual conformal field theories, finding consistent matches.

Contribution

It provides the first detailed comparison of scalar wave decay rates around BTZ black holes with dual CFT predictions, including extremal and non-extremal cases.

Findings

Decay rates match between gravity and CFT in both cases

Supports the holographic duality for BTZ black holes

Extremal and non-extremal cases both show consistent results

Abstract

In this paper we compute the decay rates of massless scalar waves excited by a star circularly orbiting around the non-extremal (general) and extremal BTZ black holes. These decay rates are compared with the corresponding quantities computed in the corresponding dual conformal field theories respectively. We find that matches are achieved in both cases.