Abstract: Teleparallel gravity is an alternative theory of gravitation. It is entirely equivalent to General Relativity in what concerns dynamical evolution. The main advantage of such a theory is that in its realm it is possible to define an expression for the gravitational energy.
Abstract: After a brief discussion of relativistic elasticity, we consider rigid one-dimensional elastic bodies (i.e. rods or strings whose speed of sound is equal to the speed of light) in a few simple examples: a rigid rod colliding with an unmovable wall, a rigid rod being pushed by a constant force, a rigid string whose endpoints are simultaneously set in motion (seen as a special case of Bell's spaceships paradox), and a radial rigid string that has partially crossed the event horizon of a Schwarzschild black hole while still being held from the outside.
Abstract: The talk will focus on two problems: Black holes formation by particle collisions in quantum physics.The approach which will be presented is based on constructing a horizon wave-function which yields the probability of finding a black hole horizon of a certain radius centered around the source.
Abstract: In general relativity, masslessness of gravitons can be traced to symmetry under diffeomorphisms. However, another elegant possibility exists: masslessness can instead arise from spontaneous violation of local Lorentz invariance. We construct the corresponding theory of gravity.
Abstract: This talk presents a brief overview of numerical relativity simulations of two scenarios of relativistic astrophysics which are among the most important sources of gravitational radiation.
Abstract: The gauge/gravity duality has been used to describe so-called holographic superconductors and superfluids with the help of black holes and solitons in Anti-de Sitter space-time. In this talk, I will mainly discuss holographic superconductors and superfluids away from the probe limit, i.e. taking backreaction of the space-time into account.
Our group coordinated the "Numerical Relativity and High Energy Physics" IRSES network (2012-2015). Here is a list of the global network meetings organized:
