Sound emission and annihilations in a programmable quantum vortex collider

In quantum fluids, the quantization of circulation forbids the diffusion of a vortex swirling flow seen in classical viscous fluids. Yet, accelerating quantum vortices may lose their energy into acoustic radiations 1 , 2 , similar to the way electric charges decelerate on emitting photons. The dissi...

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Veröffentlicht in:	Nature (London) 2021-12, Vol.600 (7887), p.64-69
Hauptverfasser:	Kwon, W. J., Del Pace, G., Xhani, K., Galantucci, L., Muzi Falconi, A., Inguscio, M., Scazza, F., Roati, G.
Format:	Artikel
Sprache:	eng
Schlagworte:	639/766/119/999 639/766/36/1125 Decay Deceleration Dipoles Electric charge Elementary excitations Emission Emissions Energy Energy dissipation Fluid flow Friction Helium Humanities and Social Sciences Liquid helium multidisciplinary Neutron stars Particle interactions Photons Quantum turbulence Science Science (multidisciplinary) Sound Sound waves Superfluidity Swirling Turbulent flow Viscous fluids Vortex dynamics Vortices
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