2021/06/10(Thu) 11:00 -12:00 Video Seminar
Title
Nonequilibrium dynamics of Brownian systems under information processing and active fluctuations
Speaker
Dr. Govind Paneru (Institute for Basic Science (IBS), Republic of Korea)Abstract
Understanding noisy information engines is a fundamental problem of nonequilibrium physics, particularly in biomolecular systems agitated by thermal and active fluctuations. One expects noise to hinder information processing and thereby the efficiency of the engines, which – according to the generalized second law of thermodynamics – is bounded by the mutual information. Yet, the direct measurement of the information-energy interplay has so far been elusive. Here, we explore the entire phase space of a cyclic information engine operating in a nonequilibrium steady-state and examine how the interplay of work fluctuation, mutual information, and dissipation shapes the information conversion efficiency of the engine.
We find that the average efficiency is maximum for non-zero noise level, near which the dissipation is minimal. Furthermore, the distribution of efficiency switches from bimodal to unimodal, and the stochastic efficiency often exceeds the bound set by the generalized second law. In the second part of my talk, I will present our recent findings demonstrating stochastic resonance in bistable systems driven by correlated active noise which mimic active baths.
Language
演講語言 (Language): in English