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Quantized vortex reconnection: Fixed points and initial conditions
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DOI：10.1103/PhysRevB.86.014509.png)
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Abstract
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Quantized vortices are phase singularities in complex fields. In superfluids, they appear as mobile interacting defects that may cross and reconnect by exchanging tails. Reconnection is a topology-changing event that allows vortex tangles to decay; it is a defining signature of quantum turbulence. We report a family of fixed points (i.e., stationary solutions), including planar forms, that capture reconnection in the Gross-Pitaevskii model in contrast to previous suggestions of pyramidal structures. These are obtained using a well known, systematic method for generating low-energy relaxed initial conditions for Gross-Pitaevskii simulations.
Keywords:
GROSS-PITAEVSKII EQUATION
SUPERFLUID
VORTICES
WAVES
LINES
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