Massive vector fields in Kerr-Newman and Kerr-Sen black hole spacetimes

A bstract 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 corresp...

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Published inThe journal of high energy physics Vol. 2020; no. 4; pp. 1 - 26
Main Authors Cayuso, Ramiro, Dias, Oscar J.C., Gray, Finnian, Kubizňák, David, Margalit, Aoibheann, Santos, Jorge E., Souza, Renato Gomes, Thiele, Leander
Format Journal Article
LanguageEnglish
Published Berlin/Heidelberg Springer Berlin Heidelberg 01.04.2020
Springer Nature B.V
SpringerOpen
Subjects
Black Holes
Black Holes in String Theory
Bosons
Classical and Quantum Gravitation
Differential equations
Elementary Particles
Fields (mathematics)
High energy physics
Mathematical analysis
Ordinary differential equations
Physics
Physics and Astronomy
Quantum Field Theories
Quantum Field Theory
Quantum Physics
Regular Article - Theoretical Physics
Relativity Theory
Spacetime
String Theory
Black Holes in String Theory
Black Holes
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Summary:A bstract 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.
ISSN:1029-8479
1029-8479
DOI:10.1007/JHEP04(2020)159