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Experimental evidence of hydrodynamic instantons : the universal route to rogue waves
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Dematteis, Giovanni, Grafke, Tobias, Onorato, Miguel and Vanden-Eijnden, Eric (2019) Experimental evidence of hydrodynamic instantons : the universal route to rogue waves. Physical Review X, 9 (4). 041057. doi:10.1103/PhysRevX.9.041057
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Official URL: https://doi.org/10.1103/PhysRevX.9.041057
Abstract
A statistical theory of rogue waves is proposed and tested against experimental data collected in a long water tank where random waves with different degrees of nonlinearity are mechanically generated and free to propagate along the flume. Strong evidence is given that the rogue waves observed in the tank are hydrodynamic instantons, that is, saddle point configurations of the action associated with the stochastic model of the wave system. As shown here, these hydrodynamic instantons are complex spatiotemporal wave field configurations which can be defined using the mathematical framework of large deviation theory and calculated via tailored numerical methods. These results indicate that the instantons describe equally well rogue waves created by simple linear superposition (in weakly nonlinear conditions) or by nonlinear focusing (in strongly nonlinear conditions), paving the way for the development of a unified explanation to rogue wave formation.
| Item Type: | Journal Article | ||||||||||||||||||
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| Subjects: | Q Science > QA Mathematics Q Science > QC Physics |
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| Divisions: | Faculty of Science, Engineering and Medicine > Science > Mathematics | ||||||||||||||||||
| Library of Congress Subject Headings (LCSH): | Rogue waves , Rogue waves -- Mathematical models, Instantons , Wave equation | ||||||||||||||||||
| Journal or Publication Title: | Physical Review X | ||||||||||||||||||
| Publisher: | American Physical Society | ||||||||||||||||||
| ISSN: | 2160-3308 | ||||||||||||||||||
| Official Date: | 18 December 2019 | ||||||||||||||||||
| Dates: |
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| Volume: | 9 | ||||||||||||||||||
| Number: | 4 | ||||||||||||||||||
| Article Number: | 041057 | ||||||||||||||||||
| DOI: | 10.1103/PhysRevX.9.041057 | ||||||||||||||||||
| Status: | Peer Reviewed | ||||||||||||||||||
| Publication Status: | Published | ||||||||||||||||||
| Access rights to Published version: | Open Access | ||||||||||||||||||
| Copyright Holders: | © 2020 American Physical Society | ||||||||||||||||||
| RIOXX Funder/Project Grant: |
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