Toggle Main Menu Toggle Search

ePrints

Kelvin-Helmholtz instability in a single-component atomic superfluid

Lookup NU author(s): Dr Andrew Baggaley, Dr Nicholas Parker

Downloads


Licence

This is the authors' accepted manuscript of an article that has been published in its final definitive form by American Physical Society, 2018.

For re-use rights please refer to the publisher's terms and conditions.


Abstract

We demonstrate an experimentally feasible method for generating the classical Kelvin-Helmholtz instability in a single-component atomic Bose-Einstein condensate. By progressively reducing a potential barrier between two counterflowing channels, we seed a line of quantized vortices, which precede to form progressively larger clusters, mimicking the classical roll-up behavior of the Kelvin-Helmholtz instability. This cluster formation leads to an effective superfluid shear layer, formed through the collective motion of many quantized vortices. From this we demonstrate a straightforward method to measure the effective viscosity of a turbulent quantum fluid in a system with a moderate number of vortices, within the range of current experimental capabilities.


Publication metadata

Author(s): Baggaley AW, Parker NG

Publication type: Article

Publication status: Published

Journal: Physical Review A

Year: 2018

Volume: 97

Online publication date: 14/05/2018

Acceptance date: 14/05/2018

ISSN (print): 2469-9926

ISSN (electronic): 2469-9934

Publisher: American Physical Society

URL: https://doi.org/10.1103/PhysRevA.97.053608

DOI: 10.1103/PhysRevA.97.053608


Altmetrics

Altmetrics provided by Altmetric


Actions

    Link to this publication


Share