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Polynomial tails and conservation laws of waves on black holes

CMSA GENERAL RELATIVITY SEMINAR

May 15, 2020      11:00 am
Speaker: Dejan Gajic - University of Cambridge

In 1972, Price suggested that inverse polynomial tails should be present in the late-time behaviour of scalar fields on Schwarzschild black holes. In the decades since, many features of these...
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A quasilocal charged Penrose inequality

CMSA GENERAL RELATIVITY SEMINAR

February 28, 2020      10:30 am
Speaker: Po-Ning Chen - UC Riverside

In this talk, we will discuss a quasi-local Penrose inequality with charges for time-symmetric initial data of the Einstein-Maxwell equation. Namely, we derive a lower bound for Brown-York type quasi-local...
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The Kerr Photon Ring

CMSA GENERAL RELATIVITY SEMINAR

February 21, 2020      10:30 am
Speaker: Alex Lupsasca - Harvard University

The Event Horizon Telescope image of the supermassive black hole in the galaxy M87 is dominated by a bright, unresolved ring.  General relativity predicts that embedded within this image lies...
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Solutions of Jang’s Equation Inside Black Holes

CMSA GENERAL RELATIVITY SEMINAR

February 14, 2020      10:30 am
Speaker: Yuewen Chen - Harvard University, CMSA

Jang’s equation is a degenerate elliptic differential equation which plays an important role in the positive mass theorem. In this talk, we describe a high order WENO (Weighted Essentially Non-Oscillatory)...
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From Quantum Field Theory to Geometric Representation Theory

CMSA GENERAL RELATIVITY SEMINAR

November 25, 2019      3:00 pm
Speaker: Philsang Yoo - Yale University

Quantum Field Theory is a framework of fundamental physics, which in particular has played important roles in the modern development of various subjects in mathematics, including enumerative geometry, knot theory,...
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