Abstract: We introduce a novel type of ladder operators, which map a scalar field with a mass into another scalar field with a different mass. It is shown that such operators are constructed from closed conformal Killing vector fields $zeta^mu$ in arbitrary dimensions if $zeta^mu$ is the eigen vector of the Ricci tensor.
Abstract: In my talk I will introduce and review the so-called non-local infinite derivative gravity theory. This gravity modification originates from string field theory and sends signs that it can be UV complete. I will explain the status of these expectations. Then I will pay special account to the possibility of singularities resolution and to application to inflation. Recent results and open questions will be discussed.
Abstract: Anti-de Sitter is not a globally hyperbolic spacetime. When studying a field theory on anti-de Sitter, one needs an appropriate choice of boundary conditions at the conformal boundary such that the classical field equation is well-posed.
The European Space Agency (ESA) Advanced Concepts Team (ACT) has created a cool interactive webpage for visualization of the lensing due to a black hole, featuring black holes with scalar hair found by our group. Try it here! (Works better with the Chrome browser)
Jorge Delgado successfully finished his Physics M.Sc. at Aveiro University, on September 20th 2016, by defending a thesis with title "Kerr black holes with electric charge and scalar hair". This thesis was supervised by Gr@v researchers and examined by Prof. Filipe Mena, from the University of Minho. Well done Jorge!
Our group coordinated the "Numerical Relativity and High Energy Physics" IRSES network (2012-2015). Here is a list of the global network meetings organized:
