Dynamics, interference effects, and multistability in a Lorenz-like system of a classical wave–particle entity in a periodic potential

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dc.contributor.authorPerks, J.
dc.contributor.authorValani, R.N.
dc.date.issued2023
dc.description.abstractA 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. We find steady states of the system that correspond to a stationary WPE as well as a rich array of unsteady motions, such as back-and-forth oscillating walkers, runaway oscillating walkers, and various types of irregular walkers. In the parameter space formed by the dimensionless parameters of the applied sinusoidal potential, we observe patterns of alternating unsteady behaviors suggesting interference effects. Additionally, in certain regions of the parameter space, we also identify multistability in the particle’s long-term behavior that depends on the initial conditions. We make analogies between the identified behaviors in the WPE system and Bragg’s reflection of light as well as electron motion in crystals.
dc.description.statementofresponsibilityJ. Perks and R. N. Valani
dc.identifier.citationChaos, 2023; 33(3):033147-1-033147-13
dc.identifier.doi10.1063/5.0125727
dc.identifier.issn1054-1500
dc.identifier.issn1089-7682
dc.identifier.orcidValani, R.N. [0000-0001-8346-0739]
dc.identifier.urihttps://hdl.handle.net/2440/138306
dc.language.isoen
dc.publisherAIP Publishing
dc.relation.granthttp://purl.org/au-research/grants/arc/DP200100834
dc.rights© 2023 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). https://doi.org/10.1063/5.0125727
dc.source.urihttps://doi.org/10.1063/5.0125727
dc.subjectLinear stability analysis; Multistability; Nonlinear systems; Lorenz system; Bragg reflection; Interference; Integro-differential equation
dc.titleDynamics, interference effects, and multistability in a Lorenz-like system of a classical wave–particle entity in a periodic potential
dc.typeJournal article
pubs.publication-statusPublished

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