Sound emission due to superfluid vortex reconnections

Leadbeater, M.; Winiecki, T.; Samuels, D.C.; Barenghi, C.F.; Adams, C.S.

doi:10.1103/physrevlett.86.1410

Sound emission due to superfluid vortex reconnections

Leadbeater, M.; Winiecki, T.; Samuels, D.C.; Barenghi, C.F.; Adams, C.S.

Authors

M. Leadbeater

T. Winiecki

D.C. Samuels

C.F. Barenghi

Professor Stuart Adams c.s.adams@durham.ac.uk
Professor

Abstract

By performing numerical simulations based on the Gross-Pitaevskii equation, we make direct quantitative measurements of the sound energy released due to superfluid vortex reconnections. We show that the energy radiated expressed in terms of the loss of vortex line length is a simple function of the reconnection angle. In addition, we study the temporal and spatial distribution of the radiation and show that energy is emitted in the form of a sound pulse with a wavelength of a few healing lengths.

Citation

Leadbeater, M., Winiecki, T., Samuels, D., Barenghi, C., & Adams, C. (2001). Sound emission due to superfluid vortex reconnections. Physical Review Letters, 86(8), 1410-1413. https://doi.org/10.1103/physrevlett.86.1410

Journal Article Type	Article
Publication Date	2001-02
Deposit Date	Jan 26, 2009
Publicly Available Date	Jan 26, 2009
Journal	Physical Review Letters
Print ISSN	0031-9007
Electronic ISSN	1079-7114
Publisher	American Physical Society
Peer Reviewed	Peer Reviewed
Volume	86
Issue	8
Pages	1410-1413
DOI	https://doi.org/10.1103/physrevlett.86.1410
Keywords	Quantum fluids, Helium, HE-4.