Scattering theory of walking droplets in the presence of obstacles

Posted by on May 22, 2016 in Bibliography, Core Bibliography, Theory Bibliography | 0 comments

Dubertrand, R., Hubert, M., Schlagheck, P., Vandewalle, N., Bastin, T., & Martin, J. (2016). Scattering theory of walking droplets in the presence of obstacles. arXiv preprint arXiv:1605.02370.

We aim to describe a droplet bouncing on a vibrating bath. Due to Faraday instability a surface wave is created at each bounce and serves as a pilot wave of the droplet. This leads to so called walking droplets or walkers. Since the seminal experiment by Couder et al [Phys. Rev. Lett. 97, 154101 (2006)] there have been many attempts to accurately reproduce the experimental results. Here we present a simple and highly versatile model inspired from quantum mechanics. We propose to describe the trajectories of a walker using a Green function approach. The Green function is related to Helmholtz equation with Neumann boundary conditions on the
obstacle(s) and outgoing conditions at infinity. For a single slit geometry our model is exactly solvable and reproduces some general features observed experimentally. It
stands for a promising.

Scattering theory of walking droplets in the presence of obstacles

http://arxiv.org/pdf/1605.02370.pdf

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On the analogy of quantum wave-particle duality with bouncing droplets

Posted by on Sep 26, 2015 in Bibliography, Core Bibliography, Theory Bibliography | 0 comments

Richardson, C. D., Schlagheck, P., Martin, J., Vandewalle, N., & Bastin, T. (2014). On the analogy of quantum wave-particle duality with bouncing droplets.arXiv preprint arXiv:1410.1373.

We explore the hydrodynamic analogues of quantum wave-particle duality in the context of a bouncing droplet system which we model in such a way as to promote comparisons to the de Broglie-Bohm interpretation of quantum mechanics. Through numerical means we obtain single-slit dif raction and double-slit interference patterns that strongly resemble those reported in experiment and that re ect a striking resemblance to quantum di raction and interference on a phenomenological level. We, however, identify evident di erences from quantum mechanics which arise from the governing equations at the fundamental level.

http://arxiv.org/pdf/1410.1373.pdf

doubleSlit sinfgleSlit

 

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