About this Event
General Physics Colloquium, Professor Geoff Penington, UC Berkeley
Title: Black Holes, Information and Wormholes
Host: Tom Hartman
Abstract: In the 1970s, Hawking showed that black holes, like any finite-temperature system, radiate energy and eventually evaporate away entirely. However, his calculations seemed to show something very weird: unlike any other physical system, the radiation seemed to contain no information about the initial state of the black hole. Instead information that fell into the black hole seemed to be lost forever. This contradiction between Hawking’s calculations and the ordinary rules of quantum mechanics has been a driving force behind a great deal of quantum gravity research over the decades since. Over the last couple of years, we have finally begun to understand where Hawking’s calculation went wrong, and to derive precise predictions, consistent with unitary quantum mechanics, for the information content of the Hawking radiation. However, the new calculations, which involve weird spacetime topologies called ‘spacetime wormholes’, have led to as many new questions as answers.
Event Details
See Who Is Interested
0 people are interested in this event
Dial-In Information
Topic: Cornell Department of Physics Fall 2020 Colloquium Series
Time: Sep 28, 2020 04:00 PM Eastern Time (US and Canada)
Every week on Mon, until Nov 16, 2020, 8 occurrence(s)
Sep 28, 2020 04:00 PM
Oct 5, 2020 04:00 PM cancelled
Oct 12, 2020 04:00 PM
Oct 19, 2020 04:00 PM
Oct 26, 2020 04:00 PM
Nov 2, 2020 04:00 PM
Nov 9, 2020 04:00 PM
Nov 16, 2020 04:00 PM
Please download and import the following iCalendar (.ics) files to your calendar system.
Join Zoom Meeting
https://cornell.zoom.us/j/91874754645?pwd=YitObHRIL3haWUsxU3h6ZzJNaElRQT09
Meeting ID: 918 7475 4645
Passcode: 335951
One tap mobile
+16468769923,,91874754645# US (New York)
+16465189805,,91874754645# US (New York)
Dial by your location
+1 646 876 9923 US (New York)
+1 646 518 9805 US (New York)
+1 470 381 2552 US (Atlanta)
+1 651 372 8299 US (St. Paul)
+1 786 635 1003 US (Miami)
+1 301 715 8592 US (Germantown)
+1 312 626 6799 US (Chicago)
+1 470 250 9358 US (Atlanta)
+1 720 928 9299 US (Denver)
+1 971 247 1195 US (Portland)
+1 253 215 8782 US (Tacoma)
+1 346 248 7799 US (Houston)
+1 602 753 0140 US (Phoenix)
+1 669 219 2599 US (San Jose)
+1 669 900 6833 US (San Jose)
Meeting ID: 918 7475 4645
Find your local number: https://cornell.zoom.us/u/acUbBpo8p8
Join by SIP
Join by H.323
162.255.37.11 (US West)
162.255.36.11 (US East)
115.114.131.7 (India Mumbai)
115.114.115.7 (India Hyderabad)
213.19.144.110 (Amsterdam Netherlands)
213.244.140.110 (Germany)
103.122.166.55 (Australia)
149.137.40.110 (Singapore)
64.211.144.160 (Brazil)
69.174.57.160 (Canada)
207.226.132.110 (Japan)
Meeting ID: 918 7475 4645
Passcode: 335951
Join by Skype for Business
User Activity
No recent activity