Abstract: In this talk we discuss the quantum theory of a scalar field on LQC Bianchi I geometry. By focusing on single modes of the scalar field, we show that, evolution of the quantum field on the background quantum space-time leads to a classical effective geometry emerging whose components depend on the quantum geometrical operators.
The first meeting of the Numerical Relativity and High Energy Physics Network took place at Aveiro University, from 9-13 July 2012. This meeting brought together researchers from Brazil, Italy, Portugal, Spain and the USA, to discuss the state of the art in relativistic gravity and its application in various contexts, ranging from astrophysics to particle physics, using both anaytical and numerical techniques.
Abstract: In this talk I will discuss Supersymmetric Grand Unification Theories (SUSY GUTs), focussing on the standard SU(5), SO(10) and E6 candidates. A short review of the Standard Model of Particle Physics is given as well as the main motivations for SUSY GUTs.
Abstract: I will describe a top-down holographic model of strongly-interacting fermions in 2+1 dimensions using D3 and D7 branes. The black hole embeddings of the D7-branes correspond to metallic states, while the Minkowski embedding represents a quantum Hall fluid at quantized fractional filling fraction.
Abstract: Recently we have investigated the wave equation of a massive vector boson, which is governed by Proca field, in the D-dimensional Schwarzschild background. Because the mass term introduce a coupling between two physical degrees of freedom, we have to solve s set of coupled ordinary differential equations.
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: 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.
The OPERA experiment recently announced surprising results: the speed of a beam of muon neutrinos was found to be higher than the speed of light, a 6-$sigma$ effect not easily discarded. It is not
the first time that faster-than-light (FTL) neutrinos haven been considered: they were proposed as an explanation (later ruled out) to observations of the supernova SN1987A, and the MINOS experiment has results similar to OPERA's.
Our group coordinated the "Numerical Relativity and High Energy Physics" IRSES network (2012-2015). Here is a list of the global network meetings organized:
