Quasinormal modes and Hawking radiation of black holes in cubic gravity
Abstract
We consider quasinormal modes and Hawking radiation of fourdimensional asymptotically flat black holes in the most general up tocubicorderincurvature dimensionindependent Einsteinian theory of gravity that shares its graviton spectrum with the Einstein theory on constant curvature backgrounds. We show that damping rate and real oscillation frequencies of quasinormal modes for scalar, electromagnetic and Dirac fields are suppressed once the coupling with the cubic term is on. The intensity of Hawking radiation is suppressed as well, leading to, roughly, one order longer lifetime at a sufficiently large coupling constant.
 Publication:

Physical Review D
 Pub Date:
 August 2020
 DOI:
 10.1103/PhysRevD.102.044023
 arXiv:
 arXiv:2006.10462
 Bibcode:
 2020PhRvD.102d4023K
 Keywords:

 General Relativity and Quantum Cosmology;
 Astrophysics  High Energy Astrophysical Phenomena;
 High Energy Physics  Theory
 EPrint:
 10 pages, revtex, 11 figures, the version to match the published PRD version