Ginzburg-Landau theory of superfluidity near absolute zero

Details Ginzburg-Landau theory of superfluidity near absolute zero Ginzburg-Landau theory of superfluidity near absolute zero

2010-01-25

arxiv.org/abs/1001.4316v1

Physics

Condensed Matter

Other Condensed Matter

Scientific paper

Due to strong interactions between superfluid particles, many particles are not in the condensate near absolute zero. In nonequilibrium situations produced under external stirring, they contribute to the flow via their induced average macroscopic motion. We present a modification of the Bose condensate model that considers this induced internal motion. Specifically, we show that the velocity field of the internal motion acts as a gauge field with which the condensate interacts, thereby coupling the applied vorticity to the superflow. The resulting Ginzburg-Landau-like model predicts the flow phenomena observed near absolute zero, in particular, transition to turbulence.

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