Columbia General Relativity & Geometric Analysis seminar - Fall 2021
The Columbia General Relativity & Geometric Analysis seminar takes place on Fridays from 3:30pm to 5pm in room 507 of the Math Department. Because of the COVID pandemic, we will provide a Zoom link to connect online to the seminar.
If you are interested in this seminar, please write to Elena Giorgi, firstname.lastname@example.org
- October 1 (virtual): Sam Collingbourne (Cambridge University), Weak Linear Stability of Schwarzschild Black Hole Exterior from Canonical Energy
The canonical energy of Hollands and Wald gives an appealing criterion for stability of black holes based upon conserved current. The method is appealing in its simplicity as it requires one to 'simply’ check the sign of the canonical energy. However, in practice this proves difficult. Indeed, even for the 4D Schwarzschild black hole exterior the positivity was not established. In this talk, I will present a resolution to this issue by connecting to another weak stability result of Holzegel.
- October 8 (virtual) at 11am (NOTICE THE TIME CHANGE): Stefan Czimek (ICERM/Brown University), TBA
- October 15 (virtual): Pieter Blue (University of Edinburgh), Linear stability of the Kerr space-time in a nonlinear radiation gauge
- October 22 (virtual): Zhongshan An (University of Connecticut), TBA
- October 29 (virtual): Dejan Gajic (Radboud University), TBA
- November 5 (in-person): Grigorios Fournodavlos (Sorbonne University, Princeton University), TBA
- November 12 (in-person): Lan-Hsuan Huang (University of Connecticut), TBA
- December 3 (in-person) (NOTICE THE TIME CHANGE for the two speakers)
- December 10 (in-person) (NOTICE THE TIME CHANGE for the two speakers)
Elena Giorgi, Mu-Tao Wang