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pro vyhledávání: '"Lingetti, Giuseppe"'
Autor:
Lingetti, Giuseppe
In this work we explore a numerical technique, based on the spherical harmonic decomposition and the discretization of the radial coordinate through \v{C}eby\v{s}\"ev polynomial interpolation, for the computation of quasi-bound states of linear massi
Externí odkaz:
http://arxiv.org/abs/2309.15246
Publikováno v:
Phys. Rev. D 108, L041502 (2023)
Due to coherent superradiant amplification, massive bosonic fields can trigger an instability in spinning black holes, tapping their energy and angular momentum and forming macroscopic Bose-Einstein condensates around them. This phenomenon produces g
Externí odkaz:
http://arxiv.org/abs/2304.01265
Autor:
Lingetti, Giuseppe, Pani, Paolo
Publikováno v:
Classical and Quantum Gravity (2023)
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 trigonometric functions. These analytical expressions can find useful applicatio
Externí odkaz:
http://arxiv.org/abs/2205.02337
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 gravitational sector. We discuss this effect for arbitrarily spinning
Externí odkaz:
http://arxiv.org/abs/2204.09335
Akademický článek
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