Abstract: Wave scattering by black holes is a subject that has received much attention in the 1970s, and has been extensively studied since then. In this presentation we analyze scattering properties of black hole analogues in acoustic systems. Analogues are artificial systems with some of the key properties of black holes that were proposed by Unruh in 1981.
Abstract: It is well known that D-dimensional vacuum gravity with D-2 commuting Killing vectors is integrable. For such theories a solution generating technique has been available since it was first presented by Belinski and Zakharov in 1978.
The European Commission Research Executive Agency approved an International Research Staff Exchange Scheme (IRSES) Marie Curie action on "Numerical Relativity and High Energy Physics" (NRHEP), within the FP7 People Programme.
From astrophysics to high-energy physics, from information theory to quantum gravity, black holes have acquired an ever increasing role in fundamental physics, and are now part of the terminology of many important branches of observational, theoretical and mathematical physics. This workshop aims at bringing together experts about black holes in all their aspects.
The fourth edition of the Black Holes Workshop was held at the University of Aveiro in 19-20 December 2011.
Abstract: We review some literature about gravitational collapse and discuss how some scenarios can lead to the formation of naked singularities. References: gr-qc/0312123, gr-qc/0308012, gr-qc/0109051, gr-qc/9804075.
Abstract: The knowledge of the Universe is essentially based on the theory of general relativity (GR). If from one hand, solar system data is in excellent agreement to the theory, available cosmological evidence on the other, is consistent with GR provided one assumes the existence of dark energy and dark matter.
Abstract: I briefly present the baselines of Quantum Field Theory in Curved Spacetimes (QFTCS), which investigates the consequences of defining a quantum field theory for the matter and its interactions in a curved spacetime background described by General Relativity. Although being na effective theory, QFTCS allows the prediction of quantum gravity effects, like thermal eva
Abstract: One of the most interesting and current phenomenological extensions of General Relativity is the so-called f(R) class of theories; a natural generalization of this includes an explicit non-minimal coupling between matter and curvature.
Abstract: In this talk I will discuss the coupling of massive scalar fields to matter in orbit around rotating black holes. It is generally expected that orbiting bodies will lose energy in gravitational waves, slowly inspiralling into the black hole.
Abstract: We discuss a new theory of gravity, recently proposed by Banados and Ferreira. This theory is inspired by an original proposal by Eddington and it is equivalent to General Relativity in vacuum. However, it dramatically differs from Eistein's gravity inside matter.
Our group coordinated the "Numerical Relativity and High Energy Physics" IRSES network (2012-2015). Here is a list of the global network meetings organized:
