2 citations · 2 across the 5 of their papers we have counts for
5 papers
Photon spheres in dynamical spacetimes
David Díaz-Guerra, Ángel Rincón, Diego Rubiera-Garcia
The characterization of the photon region -- i.e. the region of space-time filled with unstable bound null geodesics -- is critical to understand the behavior of radiation near a c…
The gravitational wave-black hole imaging correspondence for modified black holes
David Díaz-Guerra, Ángel Rincón, Diego Rubiera-Garcia +1
Black holes (BHs) can be studied via fundamentally different observational channels that probe complementary aspects of their physics. While BH imaging provides access to the quasi…
Observational appearance and photon rings of non-singular black holes from anisotropic fluids
David Díaz-Guerra, Angel Rincon, Diego Rubiera-Garcia
We consider the optical appearance of a non-singular, spherically symmetric black hole from Eddington-inspired Born-Infeld gravity coupled to anisotropic fluids. Such a black hole…
Gauge-invariant perturbations of relativistic non-perfect fluids in spherical spacetime
David Díaz-Guerra, Conrado Albertus, Prasanta Char +1
Astrophysical compact objects are usually studied using a perfect fluid model. However, in astrophysical processes out-of-equilibrium, dissipative effects become important to descr…
Wehrl entropy of entangled Segal-Bargmann oscillators
David Alonso López, Jose A. R. Cembranos, David Díaz-Guerra +1
In this manuscript we study the Wehrl entropy of entangled oscillators. This semiclassical entropy associated with the phase-space description of quantum mechanics can be used for…