35 citations · 44 across the 4 of their papers we have counts for
4 papers
Numerical aspects of black hole superradiance
Giuseppe Lingetti
In this work we explore a numerical technique, based on the spherical harmonic decomposition and the discretization of the radial coordinate through Čebyšëv polynomial interpolatio…
Black hole superradiant instability for massive spin-2 fields
Oscar J. C. Dias, Giuseppe Lingetti, Paolo Pani +1
Due to coherent superradiant amplification, massive bosonic fields can trigger an instability in spinning black holes, tapping their energy and angular momentum and forming macrosc…
General spherical harmonic bra-ket overlap integrals of trigonometric functions
Giuseppe Lingetti, Paolo Pani
Closed formulas in terms of double sums of Clebsch-Gordan coefficients are computed for the evaluation of bra-ket spherical harmonic overlap integrals of a wide class of trigonomet…
Superradiant instabilities by accretion disks in scalar-tensor theories
Giuseppe Lingetti, Enrico Cannizzaro, Paolo Pani
We study the superradiant instability in scalar-tensor theories of gravitation, where matter outside a black hole provides an effective mass to the scalar degree of freedom of the…