CROW INSTABILITY IN UNITARY FERMI GAS

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 Schrödinger 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.

Locations

• arXiv (Cornell University) - View - PDF
• ePrints@IISc (Indian Institute of Science) - View - PDF
• DataCite API - View
• Modern Physics Letters B - View