Events at Physics |
Events During the Week of April 13th through April 20th, 2025
Monday, April 14th, 2025
- No events scheduled
Tuesday, April 15th, 2025
- No events scheduled
Wednesday, April 16th, 2025
- Theory Seminar (High Energy/Cosmology)
- Title to be announced
- Time: 1:15 pm - 2:45 pm
- Place: Chamberlin 5280
- Speaker: Naomi Gendler, Harvard University
- Abstract: TBA
- Host: Jakob Moritz
Thursday, April 17th, 2025
- R. G. Herb Condensed Matter Seminar
- Field theory of monitored, interacting fermions with charge-conservation
- Time: 10:00 am - 6:00 pm
- Place: 5310 Chamberlin Hall
- Speaker: Matthew Foster, Rice University
- Abstract: The dynamics of entanglement in monitored quantum circuits has opened up a new chapter in far-from-equilibrium, quantum many-body physics. Charge-conserving dynamics of 1D free fermions monitored by local charge measurements are known to possess only an area-law entangled phase, with no measurement-induced phase transition (MIPT). We formulate the more interesting problem for monitored dynamics of interacting fermions, using the Keldysh formalism. We derive a simple effective statistical mechanics model for the system. We show that, as soon as local density interactions are turned on, the volume-law entangled phase and the MIPT into an area-law phase appear, the latter described by a separatrix in the weak-coupling RG flow. Invoking general symmetry principles, our theory also naturally exhibits the “charge-fuzzy” and “‘charge-sharpened” phases, as well as the “charge-sharpening” transition of KT type, identified in previous work. We explain how the simple effective stat. mech. model that we obtain is made possible by the heating effects of the measurements, which trivialize the fermion distribution function whilst still admitting a panoply of dynamical phases and transitions.
- Host: Alex Levchenko
- High Energy Seminar
- Axial Form Factor from MINERvA
- Time: 2:30 pm - 3:30 pm
- Place: CH 5280
- Speaker: Richard Gran, University of Minnesota Duluth
- Abstract: tba
- Host: Brian Rebel
Friday, April 18th, 2025
- Physics Department Colloquium
- title to be announced
- Time: 3:30 pm - 4:30 pm
- Place: 2241 CH
- Speaker: Erin Kara, MIT
- Host: Mark Saffman
- Academic Calendar
- Graduate School Spring 2025: Request for all Master's and Doctoral Degree Warrants
- Time: 5:00 pm - 6:00 pm
- Abstract: CONTACT: 262-2433