Crow instability in unitary Fermi gas

S. Gautam

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Crow instability in unitary Fermi gas

S. Gautam

Quantum Gases · Submitted 8 Jun 2012

abstract compiled · 2026-09-23 · no language-model review

The authors' main claim 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.

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We investigate the initiation and subsequent evolution of Crow instability in an inhomogeneous unitary Fermi gas using zero-temperature Galilei-invariant non-linear Schr\"odinger 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.

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#	sentence	role	the authors' own work	states the main conclusion	strength
s0	We investigate the initiation and subsequent evolution of Crow instability in an inhomogeneous unitary Fermi gas using zero-temperature Galilei-invariant non-linear Schr\"odinger equation.	contribution 0.86	0.90	0.05	asserted 0.83
s1	Considering a cigar-shaped unitary Fermi gas, we generate the vortex-antivortex pair either by phase-imprinting or by moving a Gaussian obstacle potential.	method 0.99	0.90	0.03	asserted 0.95
s2	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.	result 1.00	0.93	0.84	asserted 1.00

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Original abstract

We investigate the initiation and subsequent evolution of Crow instability in an inhomogeneous unitary Fermi gas using zero-temperature Galilei-invariant non-linear Schr\"odinger 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.

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1 arXiv paper cite this in 1 sentence

Each citing sentence is taken from the citing paper's LaTeX source and typed by Pith's classifier. A label appears at probability 0.8 or more (0.95 for support), a contest at 0.7 or more; the quoted words are the citing authors'. How each label was checked · JSON

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The ETF [ref] is essentially a bosonic theory describing dimers/Cooper-pairs in the UFG with a single collective condensate wavefunction that has been used to analyze the expansion and breathing mode frequencies of cold atomic gases in a trap [ref] , their surface oscillations [ref] , collisions of clouds of fermions [ref] , vortex generation [ref] , vortex pinning [ref] , instabilities [ref] , and soliton dynamics [ref] .

Validating Simple Dynamical Simulations of the Unitary Fermi Gas · Introduction · 0.96

What it cites

Cites as background 2 papers

Recently, NLSE has also been used to investigate the soliton mediated decay of shock waves into vortex dipoles in the oblate BCS superfluids [ref] .

Generation of vortex dipoles in superfluid Fermi gas in BCS limit · Introduction · 0.83
The NLSE has been used to study various phenomena like collective modes [ref] , expansion dynamics [ref] , solitons [ref] , Josephson oscillations [ref] , shock wave generation [ref] , etc.

Shock waves in strongly interacting Fermi gas from time-dependent density functional calculations · Introduction · 0.90

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