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Colloquium: Hawking radiation in a laboratory!?
Add to Calendar 2019-10-03T19:45:00 2019-10-03T21:00:00 UTC Colloquium: Hawking radiation in a laboratory!?

Physics Colloquium

Osmond Lab (117)
Start DateThu, Oct 03, 2019
3:45 PM
End DateThu, Oct 03, 2019
5:00 PM
Presented By
Prof. Ted Jacobson, University of Maryland

Colloquium: Hawking radiation in a laboratory!?

Einstein's theory of gravity opened Pandora's box of warped spacetime in 1915, and out popped the black hole, confusing and delighting (or maddening) physicists ever since. In the early 1970's it was discovered that black holes have entropy and temperature, and decay by Hawking radiation like radioactive whirlpools in the spacetime river. Two persistent puzzles have resulted from this discovery: the information paradox and the transPlanckian problem. To bring some of this down to earth, Unruh in 1980 conceived of a black hole analog, formed by a quantum fluid, which might one day be studied in a laboratory. That day has now come...probably. In the last few years, Jeff Steinhauer has carried out a number of experiments on Bose-Einstein condensates of rubidium atoms, configured to emulate a black hole, and reported on the observation of thermal phononic Hawking radiation and its quantum entanglement with phonons inside the sonic black hole. In this colloquium I will describe these ideas and experiments, as well as simulations that have been carried out in order to help understand what has so far been observed.