# Asymptotic quasinormal modes and greybody factors of string-theoretical d-dimensional black hole

### online | 2021-05-12 | 14:30

João Rodrigues

Universidade de Coimbra

In this work, we compute analytical expressions for quasinormal frequencies, associated with tensor type gravitational perturbations and complex massless scalar field perturbations, for d-dimensional spherically symmetric string-corrected black holes. We compute these frequencies in the asymptotic limit, studying two different monodromies of the perturbation, when analytically continued to the complex r-plane. Additionally, we compute analytical expressions for the greybody factors associated with such perturbations.

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