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10 papers · 2 filters
Apparent universality of semiclassical gravity in the far field limit
Paul R. Anderson, A. Fabbri
The universality of semiclassical gravity is investigated by considering the behavior of the quantities < ϕ^2 > and < {T^a}_b >, along with quantum corrections to the effective New…
On the accretion-induced QNM excitation of a Schwarzschild black hole
Alessandro Nagar, Olindo Zanotti, Jose A. Font +1
By combining the numerical solution of the nonlinear hydrodynamics equations with the solution of the linear inhomogeneous Zerilli-Moncrief and Regge-Wheeler equations we investiga…
Black hole entropy quantization
Alejandro Corichi, Jacobo Diaz-Polo, Enrique Fernandez-Borja
Ever since the pioneer works of Bekenstein and Hawking, black hole entropy has been known to have a quantum origin. Furthermore, it has long been argued by Bekenstein that entropy…
Positioning with stationary emitters in a two-dimensional space-time
Bartolomé Coll, Joan Josep Ferrando, Juan Antonio Morales
The basic elements of the relativistic positioning systems in a two-dimensional space-time have been introduced in a previous work [Phys. Rev. D {\bf 73}, 084017 (2006)] where geod…
On the space-times admitting two shear-free geodesic null congruences
Joan Josep Ferrando Juan Antonio Sáez
We analyze the space-times admitting two shear-free geodesic null congruences. The integrability conditions are presented in a plain tensorial way as equations on the volume elemen…
Quantum geometry and microscopic black hole entropy
Alejandro Corichi, Jacobo Diaz-Polo, Enrique Fernandez-Borja
Quantum black holes within the loop quantum gravity (LQG) framework are considered. The number of microscopic states that are consistent with a black hole of a given horizon area $…