Kelly Stelle
Department of Physics, Imperial College (Londres, Royaume-Uni)
Amphithéâtre Henri Mineur, Institut d'Astrophysique de Paris
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| « Quantum Gravity and Classical (Black?) Holes » |
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Kelly Stelle |
| General Relativity is famously non-renormalizable when considered as the starting point for a quantum theory of gravity. Inclusion of quadratic terms in the gravitational action remedies this perturbative ultraviolet problem, but apparently at the cost of instabilities, or alternatively of negative norm states, in the quantum theory. Non-perturbative approaches based on the asymptotic safety program give some hope of escape from such difficulties. But what are the implications of such higher-derivative terms for the classical solutions of the theory, for example the familiar Schwarzschild solution. I will review what is known about spherically symmetric static solutions to such theories that could be consistent with ordinary minimal coupling of the metric to matter. |
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vendredi 22 novembre 2013 - 11:00 Amphithéâtre Henri Mineur, Institut d'Astrophysique de Paris |
| Page web du séminaire / Seminar's webpage |