50 citations · 297 across the 14 of their papers we have counts for
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Superabsorbing metamaterial wormhole: Physical modeling and wave interaction effects
Stanislav I. Maslovski, Hugo R. L. Ferreira, Iurii O. Medvedev +1
Conjugate-impedance matched superabsorbers are metamaterial bodies whose effective absorption cross section greatly exceeds their physical dimension. Such objects are able to recei…
Ground states of a Klein-Gordon field with Robin boundary conditions in global anti-de Sitter spacetime
Claudio Dappiaggi, Hugo Ferreira, Alessio Marta
We consider a real, massive scalar field both on the -dimensional anti--de Sitter (AdS) spacetime and on its universal cover CAdS. In the second scenario, we extend the…
Fundamental solutions for the wave operator on static Lorentzian manifolds with timelike boundary
Claudio Dappiaggi, Nicolò Drago, Hugo Ferreira
We consider the wave operator on static, Lorentzian manifolds with timelike boundary and we discuss the existence of advanced and retarded fundamental solutions in terms of boundar…
Mode solutions for a Klein-Gordon field in anti-de Sitter spacetime with dynamical boundary conditions of Wentzell type
Claudio Dappiaggi, Hugo R. C. Ferreira, Benito A. Juárez-Aubry
We study a real, massive Klein-Gordon field in the Poincaré fundamental domain of the -dimensional anti-de Sitter (AdS) spacetime, subject to a particular choice of dynamica…
Superradiant instabilities in the Kerr-mirror and Kerr-AdS black holes with Robin boundary conditions
Hugo R. C. Ferreira, Carlos A. R. Herdeiro
It has been recently observed that a scalar field with Robin boundary conditions (RBCs) can trigger both a superradiant and a bulk instability for a BTZ black hole (BH). To underst…