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Events on Thursday, April 6th, 2023

R. G. Herb Condensed Matter Seminar
Driven-dissipative dynamics of coupled atomic clocks
Time: 10:00 am
Place: 5310 Chamberlin
Speaker: Emil Yuzbashyan, Rutgers
Abstract: I will present the nonequilibrium phase diagram for the driven-dissipative dynamics of two ensembles of ultra-cold atoms coupled to a resonant cavity. We will see that this relatively simple system displays a range of remarkable phenomena beyond usual superradiance. These include periodically and quasiperiodically modulated superradiance, chaos via quasiperiodicity, and synchronized chaos.
Host: Alex Levchenko
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NPAC (Nuclear/Particle/Astro/Cosmo) Forum
Landscape of CP Violation in Long-Baseline Neutrino Oscillation Experiments (tbc)
Time: 2:30 pm
Place: CH4274
Speaker: Sanjib Kumar Agarwalla, Institute of Physics, Bhubaneswar/UW-Madison
Abstract: tba
Host: Francis Halzen
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Astronomy Colloquium
Reverberation mapping the inner environments of AGN
Time: 3:30 pm
Place: 4421 Sterling Hall
Speaker: Yasaman Homayouni, Penn State University
Abstract: Reliable measurements of black hole mass and accretion-disk structure are critical to understanding the growth history of black holes and galaxy evolution over cosmic time. Beyond the local Universe, the gold standard for black hole mass and accretion-disk structure is reverberation mapping. I will present the latest results from the Sloan Digital Sky Survey Reverberation Mapping (SDSS-RM) project and show how it has transformed our understanding of supermassive black holes by dramatically expanding the number of quasars with reliable mass and accretion structure at z > 0.3. I will also present a promising new method for reliably measuring mass and accretion structure of early black holes using direct accretion-disk structure measurement from future massive time-domain quasar studies with SDSS-V and LSST.
Host: Ke Zhang
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