Northwestern Events Calendar

Jun
16
2023

Special Complex Systems Seminar: Benjamin Kuznets-Speck: "Rare Events in Noisy Systems and the Forces that Shape Them”

When: Friday, June 16, 2023
4:00 PM - 5:00 PM CT

Where: Technological Institute, F160, 2145 Sheridan Road, Evanston, IL 60208 map it

Audience: Faculty/Staff - Student - Post Docs/Docs - Graduate Students

Contact: Joan West  

Group: Physics and Astronomy Special Events and Invited Talks

Category: Academic

Description:

Rare reactive events are ubiquitous in noisy complex systems throughout the physical sciences and to large extent determine their function and regulation. Dissipative outside forces often work hand in hand with equilibrium structure to shape the mechanism and frequency of such improbable fluctuations, but little is known about how to codify the influence of nonequilibrium on reaction rates and their mechanisms. We develop a trajectory theory of how reaction rates respond to nonequilibrium forces, allowing us both to probe how nonequilibrium systems regulate their function, and leverage optimally designed forces to sample transition rates from short driven trajectories for the first time. For systems in equilibrium where detailed balance constrains transition rates, we illustrate an adaptive importance sampling scheme to estimate the corresponding free energy differences from finite time switching protocols by minimizing their lag and hysteresis.

Dr. Benjamin Kuznets-Speck, Postdoctoral Researcher, University of California, Berkeley

Host: Adilson Motter

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