Decay of quantised vorticity by sound emission
C. F. Barenghi, N.G. Parker, N.P. Proukakis, C.S. Adams
TL;DR
This paper investigates how sound emission causes decay of quantized vortices in a Bose-Einstein condensate, providing insights into turbulence dissipation in quantum fluids at near-zero temperatures.
Contribution
It introduces a model system using trapped Bose-Einstein condensates to study sound emission from accelerating vortices in a controlled environment.
Findings
Demonstrates sound emission as a decay mechanism for vortices
Provides a controlled experimental setup for vortex sound emission studies
Enhances understanding of turbulence dissipation in quantum fluids
Abstract
It is thought that in a quantum fluid sound generation is the ultimate sink of turbulent kinetic energy in the absence of any other dissipation mechanism near absolute zero. We show that a suitably trapped Bose-Einstein condensate provides a model system to study the sound emitted by accelerating vortices in a controlled way.
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