CMSA GENERAL RELATIVITY SEMINAR, CMSA EVENTS
November 7, 2023 11:00 am Relativistic fluids are known to form shocks during their evolution from near-homogeneous initial data. In expanding spacetimes, shock formation is suppressed, if the expansion is sufficiently strong. We refer to...
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CMSA GENERAL RELATIVITY SEMINAR, CMSA EVENTS
October 24, 2023 11:00 amNumerical relativity waveforms serve as ground truth for detection and parameter estimation of binary black hole mergers. Most NR waveforms to date miss memory effects, as they were extracted from...
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CMSA GENERAL RELATIVITY SEMINAR, CMSA EVENTS
October 10, 2023 11:00 amRecent developments indicate that Kerr black holes do not deform when perturbed by a static external gravitational field. Relying on hidden symmetries, compelling progress has been achieved to explain that...
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CMSA GENERAL RELATIVITY SEMINAR, CMSA EVENTS
September 19, 2023 11:00 amWe develop the reduced phase space quantization of causal diamonds in $2+1$ dimensional gravity with a nonpositive cosmological constant. The system is defined as the domain of dependence of a...
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CMSA GENERAL RELATIVITY SEMINAR, CMSA EVENTS
September 12, 2023 11:00 amA chaotic quantum system can be studied using the out-of-time-order correlator (OTOC). I will tell you about pole skipping — a recently discovered feature of the retarded Green’s function —...
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CMSA GENERAL RELATIVITY SEMINAR, CMSA EVENTS
July 5, 2023 2:00 pmKerr-AdS_{d+1} black holes for d ≥ 3 suffer from classical superradiant instabilities over a range of masses above extremality. We conjecture that these instabilities settle down into Grey Galaxies (GGs). Grey...
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CMSA GENERAL RELATIVITY SEMINAR, CMSA EVENTS
May 11, 2023 1:30 pmIn this talk, we review results on the PMT of quasi-local masses and prove the positivity of static quasi-local masses with respect to the AdS and AdS Schwarzschild spacetimes. Zoom:...
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CMSA GENERAL RELATIVITY SEMINAR, CMSA EVENTS
May 4, 2023 9:30 amOne of the most remarkable possibilities of General Relativity concerns gravitational collapse to black holes, leaving behind a geometry with light rings, ergoregions and horizons. These peculiarities are responsible for...
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CMSA GENERAL RELATIVITY SEMINAR, CMSA EVENTS
April 27, 2023 10:30 amI will discuss advances on asymptotically Euclidian initial data sets and the variational method introduced by J. Corvino and R. Schoen. This talk is based on joint papers with The-Cang...
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CMSA GENERAL RELATIVITY SEMINAR, SEMINARS, CMSA EVENTS
April 13, 2023 9:30 amIn the past few years, the Event Horizon Telescope has released the first close-up interferometric images of two supermassive black holes, M87* and SgrA*. It is believed that within these...
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