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University of Cambridge > Talks.cam > Isaac Newton Institute Seminar Series > About the wave-particle duality observed with a classical particle driven by its memory-endowed wave-field
About the wave-particle duality observed with a classical particle driven by its memory-endowed wave-fieldAdd to your list(s) Download to your calendar using vCal
If you have a question about this talk, please contact INI IT. This talk has been canceled/deleted Yves Couder Laboratory MSC University Paris-Diderot Self-organization is usually studied in systems with many interacting entities. In this talk I will describe self-organization in the dynamics of a single entity in interaction with its own past. It is observed with a wave-particle association, called a walker, in which a droplet bouncing on the surface of a vibrated fluid is self propelled and piloted by the surface waves it generates. It is a “symbiotic” entity: the drop generates the wave and the wave determines where the drop goes. A specificity of this system is that, owing to the parametric forcing by substrate vibration, the generated waves are Faraday standing waves that can be sustained for some time. In the regimes where the waves have a long lifetime the global field that drives the motion thus contains information on the previous trajectory of the drop. Surprisingly, in these long-memory regimes, several behaviours characteristic of wave-particle duality can be observed. I will discuss more specifically recent experiments in which a walker, confined in a potential well, has an orbiting motion. In spite of the classical nature of this system, several quantum-like characteristics emerge with a form of double quantization (1) of the orbits as well as probabilistic behaviours (2). (1) S. Perrard, M. Labousse, M. Miskin, E. Fort, & Y. Couder, Nature Com. 5, 3219, (2014) (2) S. Perrard, M. Labousse, E. Fort, Y. Couder, Phys Rev Lett, 113, 104101, (2014 ). This talk is part of the Isaac Newton Institute Seminar Series series. This talk is included in these lists:This talk is not included in any other list Note that ex-directory lists are not shown. |
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