Events at Physics |
Events on Friday, October 22nd, 2021
- Wonders of Physics
- Lab Escape
- Time: 10:00 am - 10:00 pm
- Place: Ingersoll Physics Museum
- Abstract: World-renowned quantum physicist Professor Alberta Pauline Schrödenberg desperately needs your help — the fate and security of the entire world (and more importantly, her funding!) hang in the balance. You’ll have to search her lab, solve mind-blowing puzzles to reveal clues, and hopefully find a way to complete your mission!
For more information, see our listing on the Wisconsin Science Festival website: - Host: Wonders of Physics
- Graduate Introductory Seminar (Physics 701)
- Linking the theory and observation of astroparticles
- Time: 12:05 pm - 12:55 pm
- Place: 2241 Chamberlin
- Speaker: Ke Fang, UW Madison Department of Physics
- Host: Sridhara Dasu
- Physics Department Colloquium
- Extremely out-of-equilibrium 1D gases
- Time: 3:30 pm - 4:30 pm
- Place: 2103 Chamberlin Hall
- Speaker: David Weiss, Penn State
- Abstract: It is notoriously hard to calculate the out-of-equilibrium dynamics of many-body quantum systems. While confining particles to one dimension sometimes simplifies dynamics, even in 1D, dynamical solutions have usually been elusive. A new approximate theory, generalized hydrodynamics (GHD), can model previously intractable dynamics. But are GHD’s approximations valid? I will describe a series of experiments with 1D Bose gases taken very far from equilibrium by, for instance, making sudden trap changes that lead them to compress 35-fold. We study the evolving distribution of rapidities, which are the momenta of the quasiparticles that emerge in these many-body systems, and which we only recently first experimentally observed for equilibrium 1D gases. These out-of-equilibrium experiments allow us to test the underlying assumptions of GHD across coupling regimes. As I will show, we find excellent agreement between our experiments and GHD theory.
- Host: Alex Levchenko
- Wonders of Physics
- The Wonders of Physics Traveling Show
- Time: 6:00 pm - 6:25 pm
- Place: Top of State Street, near the Historical Museum
- Speaker: Haddie McLean, UW Physics Department
- Abstract: The Wonders of Physics traveling show is back! Join Haddie McLean for a fast-paced, interactive presentation as part of the Wisconsin Science Festival.
- Wonders of Physics
- The Wonders of Physics Traveling Show
- Time: 7:00 pm - 7:25 pm
- Place: Top of State Street, near the Historical Museum
- Speaker: Haddie McLean, UW Physics Department
- Abstract: The Wonders of Physics traveling show is back! Join Haddie McLean for a fast-paced, interactive presentation as part of the Wisconsin Science Festival.