Events at Physics |
Events During the Week of June 21st through June 28th, 2026
Monday, June 22nd, 2026
- Thesis Defense
- Precision Cosmology from Cross-Correlations of the Cosmic Microwave Background and Large-Scale Structure
- Time: 11:00 am - 1:00 pm
- Place: 1313 Sterling or
- Speaker: Yurii Kvasiuk
- Abstract: Cross-correlations between the Cosmic Microwave Background (CMB) and the large-scale structure (LSS) of the Universe provide a powerful avenue for extracting cosmological information. This thesis develops new statistical and machine-learning methods for analyzing CMB×LSS cross-correlations more efficiently, with a particular focus on the kinetic Sunyaev--Zel'dovich (kSZ) effect and local primordial non-Gaussianity. I introduce an optimal Bayesian framework for cosmic velocity reconstruction based on autodifferentiable likelihoods. I then present machine-learning methods for modeling the electron distribution and for estimating non-Gaussianity from LSS surveys. In addition, I develop an optimal method for large-scale power spectrum estimation in tomographic redshift surveys. I conclude by discussing how these methods can be combined to achieve state-of-the-art precision in constraining primordial non-Gaussianity using data from current CMB and LSS surveys
- Host: Moritz Muenchmeyer
Tuesday, June 23rd, 2026
- Thesis Defense
- From Cosmic Structures to String Geometries with Topological and Machine Learning Methods
- Time: 1:30 pm - 3:30 pm
- Place: Chamberlin 5310
- Speaker: Jacky Yip
- Host: Gary Shiu
Wednesday, June 24th, 2026
- Social Gathering
- Summer Recess
- Time: 12:30 pm - 1:00 pm
- Place: Rainy day location - 5310 Chamberlin
- Speaker: Everyone is welcome
- Abstract: If the weather is nice, we'll meet on Bascom Hill (in front of Birge Hall). Feel free to bring your lunch. We will borrow cornhole and ladder toss from the L&S Dean's Office and play outside for 30 minutes. Some of us will probably walk up together, meeting in the courtyard between Chamberlin and Sterling ~12:25. Feel free to walk with us! No need to sign up. Just come join us!
- Host: Sharon Kahn
Thursday, June 25th, 2026
- No events scheduled
Friday, June 26th, 2026
- No events scheduled