Author(s): Cayuso, Ramiro ; Dias, Oscar J.C. ; Gray, Finnian ; Kubizňák, David ; Margalit, Aoibheann ; Santos, Jorge E. ; Souza, Renato Gomes [UNESP] ; Thiele, Leander
Date: 2020
Persistent ID: http://hdl.handle.net/11449/200326
Origin: Oasisbr
Subject(s): Black Holes; Black Holes in String Theory; Black Holes; Black Holes; Black Holes in String Theory; Black Holes in String Theory
Made available in DSpace on 2020-12-12T02:03:41Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-04-01
The superradiant instability modes of ultralight massive vector bosons are studied for weakly charged rotating black holes in Einstein-Maxwell gravity (the Kerr- Newman solution) and low-energy heterotic string theory (the Kerr-Sen black hole). We show that in both these cases, the corresponding massive vector (Proca) equations can be fully separated, exploiting the hidden symmetry present in these spacetimes. The resultant ordinary differential equations are solved numerically to find the most unstable modes of the Proca field in the two backgrounds and compared to the vacuum (Kerr black hole) case.
Perimeter Institute, 31 Caroline Street North
Department of Physics and Astronomy University of Waterloo
STAG research centre and Mathematical Sciences Highfield Campus University of Southampton
DAMTP Centre for Mathematical Sciences, Wilberforce Road
Institute for Advanced Study
ICTP South American Institute for Fundamental Research IFT-UNESP
ICTP South American Institute for Fundamental Research IFT-UNESP
