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The present works complements and expands a previous one, focused on the emission of scalar fields by a (4 + n)-dimensional rotating black hole on the brane, by studying the emission of gauge fields on the brane from a similar black hole. A comprehensive analysis of the particle, energy and angular momentum emission rates is undertaken, for arbitrary… (More)

Barry Wardell, 2 Chad R. Galley, Anıl Zenginoğlu, Marc Casals, Sam R. Dolan, and Adrian C. Ottewill School of Mathematical Sciences and Complex & Adaptive Systems Laboratory, University College Dublin, Belfield, Dublin 4, Ireland Department of Astronomy, Cornell University, Ithaca, NY 14853, USA Theoretical Astrophysics, California Institute of Technology,… (More)

We study in detail the scalar-field Hawking radiation emitted into the bulk by a higher-dimensional, rotating black hole. We numerically compute the angular eigenvalues, and solve the radial equation of motion in order to find transmission factors. The latter are found to be enhanced by the angular momentum of the black hole, and to exhibit the well-known… (More)

Field perturbations of a curved background space-time obey a wave equation, for which the retarded Green function is a fundamental object. It is known that the Green function diverges when the two space-time points as its arguments are connected by a null geodesic. The Hadamard form makes explicit the form of this divergence but only when one of the points… (More)

- Marc Casals, Alessandro Fabbri, Cristian A N Martinez, Jorge Zanelli
- Physical review letters
- 2017

We analytically investigate backreaction by a quantum scalar field on two rotating Bañados-Teitelboim-Zanelli (BTZ) geometries: that of a black hole and that of a naked singularity. In the former case, we explore the quantum effects on various regions of relevance for a rotating black hole space-time. We find that the quantum effects lead to a growth of… (More)

Recent works have included the effect of rotation on simulations of black hole events at the LHC, showing that the angular momentum of the black hole cannot be ignored and it makes a non-trivial contribution for most of the lifetime of the black hole. A key consequence of the rotation of the black hole is that the Hawking radiation is no longer isotropic,… (More)

In this work, we have continued the study of the Hawking radiation on the brane from a higher-dimensional rotating black hole by investigating the emission of fermionic modes. A comprehensive analysis is performed that leads to the particle, power and angular momentum emission rates, and sheds light on their dependence on fundamental parameters of the… (More)

- Marc Casals, A. Ottewill
- Physical review letters
- 2012

Linear field perturbations of a black hole are described by the Green function of the wave equation that they obey. After Fourier decomposing the Green function, its two natural contributions are given by poles (quasinormal modes) and a largely unexplored branch cut in the complex frequency plane. We present new analytic methods for calculating the branch… (More)

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