Description
In string theory, a natural low energy effective action is
the Einstein-Gauss-Bonnet gravity, in which a Gauss-Bonnet term
accompanies the usual Einstein-Hilbert action. Born-Infeld
electrodynamics arises when considering an Abelian gauge field coupled
to the open bosonic string or open superstring. We will analyze the
superradiant behavior of a massive, charged scalar field coupled to a
spherically symmetric, charged black hole solution within this modified
theory of gravity, and compare with the classical Reissner-Nordström
solution. To do so, we will compute the cross-section and the
quasinormal-modes (QNMs) spectrum, analyzing how this modification of
Einsteinian gravity affects the possible observables.
| Field of Research/Work | Cosmology, Astrophysics, and Gravitation |
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Author
Oskar Borgvall Gonzalez
(Instituto Superior Tecnico)
