Quantum tunneling of a vortex between two pinning potentials

Details Quantum tunneling of a vortex between two pinning potentials Quantum tunneling of a vortex between two pinning potentials

2011-05-30

arxiv.org/abs/1105.5869v3

Phys. Rev. Lett. 108, 015301 (2012)

Physics

Condensed Matter

Quantum Gases

4 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.108.015301

A vortex can tunnel between two pinning potentials in an atomic Bose-Einstein condensate on a time scale of the order of 1s under typical experimental conditions. This makes it possible to detect the tunneling experimentally. We calculate the tunneling rate by phenomenologically treating vortices as point-like charged particles moving in an inhomogeneous magnetic field. The obtained results are in close agreement with numerical simulations based on the stochastic c-field theory.

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