Berlin 2024 – scientific programme
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DY: Fachverband Dynamik und Statistische Physik
DY 23: Stochastic Thermodynamics
DY 23.11: Talk
Wednesday, March 20, 2024, 12:15–12:30, BH-N 128
Active matter under control — Luke K. Davis1,2, Karel Proesmans1,3, and •Etienne Fodor1 — 1Department of Physics and Materials Science, University of Luxembourg, L-1511 Luxembourg — 2Department of Mathematics, University College London, 25 Gordon Street, London, England — 3Niels Bohr International Academy, Niels Bohr Institute, University of Copenhagen, Blegdamsvej 17, 2100 Copenhagen, Denmark
Active constituents burn fuel to sustain individual motion, giving rise to collective effects that are not seen in systems at thermal equilibrium. There is a great potential in harnessing the striking phenomenology of active matter to build novel controllable and responsive materials that surpass passive ones. Yet, we currently lack a systematic roadmap to predict the protocols driving active systems between different states in a way that is thermodynamically optimal. Equilibrium thermodynamics is an inadequate foundation to this end, due to the dissipation rate arising from the constant fuel consumption in active matter. Here, we derive and implement a versatile framework for the thermodynamic control of active matter. Combining recent developments in stochastic thermodynamics and nonequilibrium response theory, our approach shows how to find the optimal control for either continuous- or discrete-state active systems operating arbitrarily far from equilibrium. Our results open the door to designing novel active materials which are not only built to stabilize specific nonequilibrium collective states, but are also optimized to switch between different states at minimum dissipation.
Keywords: optimal control; nonequilibrium thermodynamics; response theory