J 2018

Massive nonminimally coupled scalar field in Reissner-Nordström spacetime: Long-lived quasinormal modes and instability

KONOPLYA, Roman, Zdeněk STUCHLÍK and Olexandr ZHYDENKO

Basic information

Original name

Massive nonminimally coupled scalar field in Reissner-Nordström spacetime: Long-lived quasinormal modes and instability

Authors

KONOPLYA, Roman (804 Ukraine, guarantor, belonging to the institution), Zdeněk STUCHLÍK (203 Czech Republic, belonging to the institution) and Olexandr ZHYDENKO (804 Ukraine)

Edition

Physical Review D, 2018, 2470-0010

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10308 Astronomy

Country of publisher

United States of America

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

RIV identification code

RIV/47813059:19240/18:A0000242

Organization unit

Faculty of Philosophy and Science in Opava

UT WoS

000451335900009

Keywords in English

black holes; quasinormal modes; Reissner-Nordström spacetime

Tags

International impact, Reviewed

Links

GB14-37086G, research and development project.
Změněno: 4/4/2019 09:23, RNDr. Jan Hladík, Ph.D.

Abstract

V originále

Here we show that the phenomenon of arbitrarily long-lived quasinormal modes (called quasiresonances) of a massive scalar field in the vicinity of a black hole is not an artifact of the test field approximation, but takes place also when the (derivative) coupling of a scalar field with the Einstein tensor is taken into consideration. We observe that at large coupling and high multipole numbers, the growing modes appear in the spectrum, which are responsible for the eikonal instability of the field. For small coupling, when the configuration is stable, there appear the purely imaginary quasinormal modes which are nonperturbative in the coupling constant. At the sufficiently small coupling the nonminimal scalar field is stable and the asymptotic late-time tails are not affected by the coupling term. The accurate calculations of quasinormal frequencies for a massive scalar field with the derivative coupling in the Reissner-Nordstrom black-hole background are performed with the help of the Frobenius method, time-domain integration and WKB expansion.