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@ARTICLE{Giuriato:348514,
author = {Giuriato, Umberto and Krstulovic, Giorgio and Onorato,
Miguel and Proment, Davide},
title = {{S}tokes drift and impurity transport in a quantum fluid},
journal = {Physical review / A},
volume = {107},
number = {6},
issn = {2469-9926},
address = {Woodbury, NY},
publisher = {Inst.},
reportid = {GSI-2024-00338, 2212.07952},
pages = {L061303},
year = {2023},
note = {CC BY 4.0 DEED Attribution 4.0 International "Published by
the American Physical Society under the terms of the
Creative Commons Attribution 4.0 International license.
Further distribution of this work must maintain attribution
to the author(s) and the published article’s title,
journal citation, and DOI."},
abstract = {Stokes drift is a classical fluid effect in which traveling
waves transfer momentum to tracers of the fluid, resulting
in a nonzero drift velocity in the direction of the incoming
wave; this effect is the driving mechanism allowing
particles, i.e., impurities, to be transported by the flow.
In a classical (viscous) fluid this happens usually due to
the presence of viscous drag forces; because of the eventual
absence of viscosity in quantum fluids, impurities are
driven by inertial effects and pressure gradients only. We
present theoretical predictions of a Stokes drift analogous
in quantum fluids finding that, at the leading order, the
drift direction and amplitude depend on the initial impurity
position with respect to the wave phase, and at the second
order, our theoretical model recovers the classical Stokes
drift but with a coefficient that depends on the relative
particle-fluid density ratio. Our theoretical predictions
are obtained for classical impurities using multitime
analytical asymptotic expansions. Numerical simulations of a
two-dimensional Gross-Pitaevskii equation coupled with a
classical impurity corroborate our findings. Our findings
are experimentally testable, for instance, using fluids of
light obtained in photorefractive crystals.},
cin = {EXM},
ddc = {530},
cid = {I:(DE-Ds200)EXM-20080818OR100},
pnm = {612 - Cosmic Matter in the Laboratory (POF4-612)},
pid = {G:(DE-HGF)POF4-612},
experiment = {$EXP:(DE-Ds200)no_experiment-20200803$},
typ = {PUB:(DE-HGF)16},
UT = {WOS:001019866900001},
doi = {10.1103/PhysRevA.107.L061303},
url = {https://repository.gsi.de/record/348514},
}