Orateur
Roberto Emparan
Description
It has often been assumed that quantum gravity effects near a macroscopic black hole horizon should be strongly suppressed due to the enormous hierarchy between the horizon scale and the Planck scale, and that any observable deviations would require highly speculative or poorly controlled non-local physics. However, it has recently become clear that this expectation can fail in a controlled and physically interesting way. In particular, near-extremal black holes can exhibit enhanced quantum fluctuations that become manifest through a variety of physical effects. I will discuss several such effects in this talk.