Cornell University

This is a past event. Its details are archived for historical purposes.

The contact information may no longer be valid.

Please visit our current events listings to look for similar events by title, location, or venue.

Department of Physics Colloquium

Monday, October 18, 2021 at 4:00pm to 5:00pm

Rockefeller Hall, Schwartz Auditorium
Central Campus

General Physics Colloquium, Professor Tom Hartman, Cornell University

Title:  Do Black Holes Obey Quantum Mechanics?

Host:  Eanna Flanagan

Abstract:  Black holes seem to destroy information, violating a basic principle of quantum mechanics. This is Hawking's information paradox, which could lead to dramatic effects around black holes but remains unresolved after 45 years. I will review the status of the paradox and describe recent progress on calculating the entropy of Hawking radiation. Surprisingly, there is a large effect from quantum wormholes connecting distant regions in spacetime that plays a crucial role. The results support the idea that black holes do behave like ordinary quantum systems, but only when viewed from the outside. The new effect is driven by quantum entanglement and is part of a broader program to relate geometry to quantum information, a perspective that offers some tantalizing hints toward a deeper understanding of quantum gravity.

Dial-In Information

This talk will also be available via Zoom, and the link will be emailed to the Physics listserv the week of the talk.  If you are not on the listserv, please contact Sue Sullivan at by Monday at 3:00 pm to request the link.

Google Calendar iCal Outlook
Event Type




University Themes



cascal, physics, quantum_site



Contact E-Mail

Contact Name

Sue Sullivan

Contact Phone



Tom Hartman

Speaker Affiliation

Cornell University

Dept. Web Site

Recent Activity