Phys. Rev. Lett. 86, 1410–1413 (2001)Sound Emission due to Superfluid Vortex ReconnectionsReceived 5 September 2000; published in the issue dated 19 February 2001 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. © 2001 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.86.1410
DOI:
10.1103/PhysRevLett.86.1410
PACS:
03.75.Fi, 67.40.Vs, 67.57.De
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