Universal and nonuniversal aspects of vortex reconnections in superfluids
Villois, Alberto, Proment, Davide and Krstulovic, Giorgio (2017) Universal and nonuniversal aspects of vortex reconnections in superfluids. Physical Review Fluids, 2 (4). ISSN 2469-990X
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Abstract
Insight into vortex reconnections in superfluids is presented, making use of analytical results and numerical simulations of the Gross-Pitaevskii model. Universal aspects of the reconnection process are investigated by considering different initial vortex configurations and making use of a recently developed tracking algorithm to reconstruct the vortex filaments. We show that during a reconnection event the vortex lines approach and separate always according to the time scaling $ \delta \sim t^{1/2} $ with prefactors that depend on the vortex configuration. We also investigate the behavior of curvature and torsion close to the reconnection point, demonstrating analytically that the curvature can exhibit a self-similar behavior that might be broken by the development of shocklike structures in the torsion.
Item Type: | Article |
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Faculty \ School: | Faculty of Science > School of Mathematics |
Depositing User: | Pure Connector |
Date Deposited: | 09 Mar 2017 01:42 |
Last Modified: | 24 May 2022 12:32 |
URI: | https://ueaeprints.uea.ac.uk/id/eprint/62917 |
DOI: | 10.1103/PhysRevFluids.2.044701 |
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