CMSA GENERAL RELATIVITY SEMINAR
May 15, 2020 11:00 amIn 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...
Read more
CMSA GENERAL RELATIVITY SEMINAR
May 8, 2020 11:00 amWe will be concerned with asymptotically hyperbolic 'hyperboloidal' initial data for the Einstein equations. Such initial data is modeled on the upper unit hyperboloid in Minkowski spacetime and consists of a Riemannian manifold (M, g)...
Read more
CMSA GENERAL RELATIVITY SEMINAR
April 3, 2020 10:30 amvia Zoom Video Conferencing: https://harvard.zoom.us/j/635180669 In this talk, we will discuss the rigidity of positive mass theorem for asymptotically hyperbolic manifolds. That is, if the mass equality holds, then the...
Read more
CMSA GENERAL RELATIVITY SEMINAR
March 27, 2020 10:30 amvia Zoom Video Conferencing: https://harvard.zoom.us/j/635180669 The purpose of this talk is twofold: First we present a new proof of the spacetime positive mass theorem (joint with Demetre Kazaras and Marcus...
Read more
CMSA GENERAL RELATIVITY SEMINAR
March 6, 2020 10:30 amFew notions within the realm of mathematical physics succeed in capturing the imagination and inspiring awe as well as that of a black hole. First encountered in the Schwarzschild solution,...
Read more
CMSA GENERAL RELATIVITY SEMINAR
February 28, 2020 10:30 amIn 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...
Read more
CMSA GENERAL RELATIVITY SEMINAR
February 21, 2020 10:30 amThe 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...
Read more
CMSA GENERAL RELATIVITY SEMINAR
February 14, 2020 10:30 amJang’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)...
Read more
CMSA GENERAL RELATIVITY SEMINAR
February 7, 2020 10:30 amIn this talk, we will introduce the concept of improvabilty of the dominant energy scalar and discuss strong consequences of non-improvability. We employ new, large families of deformations of the...
Read more
CMSA GENERAL RELATIVITY SEMINAR
November 25, 2019 3:00 pmQuantum 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,...
Read more