Quantum information meets gravity: A VERY random walk across black holes, cosmology, entanglement, Unruh effect, Hawking radiation and geometric phases

Speaker: Eduardo Martín-Martínez
Affiliation: IFF-CSIC
Date: Thursday, 21 October 2010 at 10:00
Location: Seminar Room, Serrano 113b

What does Quantum Information have to say about gravity?. Quantum gravity and QFT in curved spacetimes lead to phenomena such as Black Hole evaporation and the Unruh effect. It is known that the Unruh and Hawking effects can degrade the entanglement of quantum field states. However, it is not so well-known that the evolution of quantum fields undergoing gravitational interaction can also generate entanglement. We will see this in phenomena such as stellar collapse and the expansion of the universe. This entanglement can be used to extract information about the underlying spacetime, providing us new tools to study the elusive quantum effects of gravity. We will finish our walk suggesting how techniques common in Solid State Physics can be successfully applied to detect these quantum effects of the weakest of the interactions.