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May 17 2023

Seminar- “Nonlinear Response in Diffusive Systems” with Ruchira Mishra

Physics Seminar

May 17, 2023

11:00 AM - 12:00 PM


SES 2214

Physics Seminar - Ruchira Mishra
Ruchira Mishra, a graduate student from the University of Chicago, will be leading a physics seminar at 11:00 AM in room 2214 SES titled, “Nonlinear Response in Diffusive Systems."

Nonintegrable systems thermalize, leading to the emergence of fluctuating hydrodynamics. Typically, this hydrodynamics is diffusive. We use the effective field theory (EFT) of diffusion to compute higher-point functions of conserved densities. We uncover a simple scaling behavior of correlators at late times, and, focusing on three and four-point functions, derive the asymptotically exact universal scaling functions that characterize nonlinear response in diffusive systems. This allows for precision tests of thermalization beyond linear response in quantum and classical many-body systems. We confirm our predictions in a classical lattice gas.


Physics Office

Date posted

May 11, 2023

Date updated

May 11, 2023