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Crow instability in unitary Fermi gas

By Sandeep Gautam


In this paper, we investigate the initiation and subsequent evolution of Crow instability in an inhomogeneous unitary Fermi gas using zero-temperature Galilei-invariant nonlinear Schrodinger equation. Considering a cigar-shaped unitary Fermi gas, we generate the vortex-antivortex pair either by phase-imprinting or by moving a Gaussian obstacle potential. We observe that the Crow instability in a unitary Fermi gas leads to the decay of the vortex-antivortex pair into multiple vortex rings and ultimately into sound waves

Topics: Physics
Publisher: World Scientific Publishing Company
Year: 2013
DOI identifier: 10.1142/S0217984913500978
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