Lookup NU author(s): Dr Luca Galantucci,
Dr Andrew Baggaley,
Dr Nicholas Parker,
Professor Carlo Barenghi
This is the authors' accepted manuscript of an article that has been published in its final definitive form by National Academy of Sciences, 2019.
For re-use rights please refer to the publisher's terms and conditions.
Vortex reconnections are fundamental events in fluid motion, randomizing the velocity field, changing the topology, and redistributing energy across length scales. In superfluid helium and atomic Bose–Einstein condensates, vortices are effectively one-dimensional lines called quantum vortices (akin to minitornadoes of a fixed strength). Individual reconnections happen when two vortices collide and subsequently recoil, exchanging heads and tails. Recent experimental progress opens the possibility of answering the important question as to whether reconnections obey a universal behavior. Here we show that the intervortex distance between reconnecting vortices obeys two fundamental scaling laws, which we identify in experimental data and numerical simulations, across homogeneous superfluids and trapped condensates.
Author(s): Galantucci L, Baggaley AW, Parker NG, Barenghi CF
Publication type: Article
Publication status: Published
Journal: Proceedings of the National Academy of Sciences of the United States of America
Print publication date: 18/06/2019
Online publication date: 06/06/2019
Acceptance date: 06/05/2019
Date deposited: 07/06/2019
ISSN (print): 0027-8424
ISSN (electronic): 1091-6490
Publisher: National Academy of Sciences
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