Past Seminars Seminários Já Decorridos 2012

The event horizon: from cosmology to black holes

By: Carlos Herdeiro
From: Universidade de Aveiro
At: Instituto de Investigação Interdisciplinar, Anfiteatro
[2012-05-29] 11:30

Event horizons occur, in relativistic gravity, when there are regions of space-time inaccessible to some observers. This is the case of both an accelerating Universe, like ours seems to be, as acknowledged by the 2011 Physics Nobel Prize, and of regions of space-time that become trapped, a.k.a. black holes.

In this talk, using the horizon concept as a common denominator, I will discuss three topics in contemporary relativistic gravity research, of both phenomenological and conceptual interest, covering some recent results:

i) dark energy and the accelerating universe;
ii) black holes dynamics and gravitational radiation;
iii) trans-Planckian scattering and high energy physics.

The talk will emphasize ideas rather than technical details.