Radiation from a D-dimensional collision of shock waves: analytical results
Speaker
Flávio Coelho
Event date
Venue
GAP room
Event type
Strong Gravity News & Events
Relativistic elasticity of rigid rods and strings
Speaker
José Natário (IST, U. Lisbon)
Event date
Venue
GAP room
Event type
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.
Quantum Black Holes: from the Hoop Conjecture to possible searches for their decay signatures
Speaker
Octavian Micu (ISS Bucharest)
Event date
Venue
GAP room
Event type
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.
III Amazonian workshop on black holes
The III Amazonian workshop on black holes and analogue models of gravity will take place in UFP, Belém do Pará, Brazil, from 4-7 August 2014. This is a satellite workshop of the IRSES Marie Curie action on "Numerical Relativity and High Energy Physics", of which the U. Aveiro and UFP are both partners.
See the media coverage by the UFPA press here.
Goldstone gravity from spontaneous Lorentz violation
Speaker
Robertus Potting (U. Algarve)
Event date
Venue
GAP room
Event type
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.
Absorption of a massive scalar field by a charged black hole
Speaker
Carolina Benone
Event date
Venue
GAP room
Event type
Rapid growth of superradiant instabilities for charged black holes in a cavity
Speaker
Helgi Rúnarsson
Event date
Venue
GAP room
Event type
Numerical relativity simulations of binary neutron stars and collapsars
Speaker
José Antonio Font (Valencia U.)
Event date
Venue
GAP room
Event type
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.
Holographic superconductors: effect of backreaction
Speaker
Betti Hartmann (Jacobs U.)
Event date
Venue
GAP room
Event type
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.
Honorable Mention in 2014 GRF Essay Competition
The Essay "A new spin on black hole hair", by C. Herdeiro and E. Radu, was selected for an "Honorable Mention" in the Gravity Research Foundation 2014 Awards for Essays on Gravitation. The first prize was awarded to M. Krauss and (Nobel Laureate) F. Wilczek, for the essay "From B-modes to Quantum Gravity and Unification of Forces". See the list of all prized essays here.