Regensburg 2022 – wissenschaftliches Programm

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DY: Fachverband Dynamik und Statistische Physik

DY 44: Poster Session: Statistical Physics and Critical Phenomena

DY 44.7: Poster

Donnerstag, 8. September 2022, 15:00–18:00, P2

Fluctuations of work and heat in a driven entropic potential — •Syed Yunus Ali, Prashanta Bauri, and Debasish Mondal — Department of Chemistry and Center for Molecular and Optical Sciences & Technologies, Indian Institute of Technology Tirupati, Yerpedu 517619, Andhra Pradesh, India

We consider the motion of an over-damped Brownian particle in two-dimensional bilobal confinement driven by a periodic field in the presence of a transverse bias force. The confinement results in an entropic bistable potential in a reduced dimension. We calculate the work done and absorbed heat over a period and their mean and relative variance fluctuations in entropy and energy-dominated regimes. The average work done and absorbed heat over a period show turnover behavior as a function of noise strength and frequency input. Therefore, these observables can be considered potential quantifiers of the entropic stochastic resonance phenomena. We find that the heat fluctuations over a single period are always greater than the work fluctuations. We also discuss the applicability of steady-state fluctuation theorems in this system.