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Crow instability in unitary Fermi gas

By Sandeep Gautam

Abstract

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
OAI identifier: oai:eprints.iisc.ac.in:46745
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