Scalar and axial quasinormal modes of massive static phantom wormholes

TL;DR

This paper investigates the quasinormal modes of massive static phantom wormholes for various perturbations, comparing their spectra with Schwarzschild black holes and analyzing the dependence on mass.

Contribution

It provides the first detailed calculation of scalar, axial, and radial quasinormal modes for massive static phantom wormholes using direct and WKB methods.

Findings

Wormhole modes approach black hole modes as 1/M for large mass.

Spectrum differences diminish with increasing mass.

Results help distinguish wormholes from black holes via gravitational wave signatures.

Abstract

We study the quasinormal modes for scalar, axial and radial perturbations of massive static spherically symmetric wormholes supported by a phantom scalar field, calculating the modes directly and employing the WKB approximation. The spectrum of the quasinormal modes is compared with the spectrum of Schwarzschild black holes. For fixed multipole number $l$ and large mass $M$ the wormhole modes approach their black hole counterparts as $1/M$.