A classical wave-particle entity in the form of a millimetric walking droplet can emerge on the free surface of a vertically vibrating liquid bath. Such wave-particle entities have been shown to exhibit hydrodynamic analogs of quantum systems. Using an idealized theoretical model of this wave-particle entity in a tilted potential, we explore its transport behavior. The integro-differential equation of motion governing the dynamics of the wave-particle entity transforms to a Lorenz-like system of ordinary differential equations that drives the particle's velocity. Several anomalous transport regimes such as absolute negative mobility, differential negative mobility, and lock-in regions corresponding to force-independent mobility are observed. These observations motivate experiments in the hydrodynamic walking-droplet system for the experimental realizations of anomalous transport phenomena.
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http://dx.doi.org/10.1103/PhysRevE.105.L012101 | DOI Listing |
Chaos
January 2024
School of Computer and Mathematical Sciences, University of Adelaide, Adelaide, South Australia 5005, Australia.
A classical wave-particle entity (WPE) can materialize as a millimeter-sized droplet walking horizontally on the free surface of a vertically vibrating liquid bath. This WPE comprises a particle (droplet) that shapes its environment by locally exciting decaying standing waves, which, in turn, guides the particle motion. At high amplitude of bath vibrations, the particle-generated waves decay very slowly in time and the particle motion is influenced by the history of waves along its trajectory.
View Article and Find Full Text PDFChaos
March 2023
School of Computer and Mathematical Sciences, University of Adelaide, Adelaide, South Australia 5005, Australia.
A classical wave-particle entity (WPE) can be realized experimentally as a droplet walking on the free surface of a vertically vibrating liquid bath, with the droplet's horizontal walking motion guided by its self-generated wave field. These self-propelled WPEs have been shown to exhibit analogs of several quantum and optical phenomena. Using an idealized theoretical model that takes the form of a Lorenz-like system, we theoretically and numerically explore the dynamics of such a one-dimensional WPE in a sinusoidal potential.
View Article and Find Full Text PDFLight Sci Appl
January 2023
CAS Key Laboratory of Quantum Information, University of Science and Technology of China, 230026, Hefei, China.
As a fundamental characteristic of physical entities, wave‒particle duality describes whether a microscopic entity exhibits wave or particle attributes depending on the specific experimental setup. This assumption is premised on the notion that physical properties are inseparable from the objective carrier. However, after the concept of the quantum Cheshire cats was proposed, which makes the separation of physical attributes from the entity possible, the premise no longer holds.
View Article and Find Full Text PDFBiosystems
September 2022
Department of Pharmacology and Toxicology, Ernest Mario School of Pharmacy, Rutgers University, Piscataway, NJ, 08855, USA. Electronic address:
The process of computing may be defined simply as the goal-directed selection process (GDSP) that selects m out of n possible choices to achieve some desired goals, thereby generating or utilizing the amount of Shannon information, I, that can be approximated as I = - log (m/n) bits. There are at least 3 distinct kinds of the physicochemical systems that can execute GDSP; (i) enzymes (i.e.
View Article and Find Full Text PDFChaos
February 2022
School of Mathematical Sciences, University of Adelaide, Adelaide, South Australia 5005, Australia.
Vertically vibrating a liquid bath can give rise to a self-propelled wave-particle entity on its free surface. The horizontal walking dynamics of this wave-particle entity can be described adequately by an integro-differential trajectory equation. By transforming this integro-differential equation of motion for a one-dimensional wave-particle entity into a system of ordinary differential equations (ODEs), we show the emergence of Lorenz-like dynamical systems for various spatial wave forms of the entity.
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