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arXiv · 1703.01998

Core structure of two-dimensional Fermi gas vortices in the BEC-BCS crossover region

Lucas Madeira·Stefano Gandolfi·Kevin E. Schmidt
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Abstract

We report $T=0$ diffusion Monte Carlo results for the ground-state and vortex excitation of unpolarized spin-1/2 fermions in a two-dimensional disk. We investigate how vortex core structure properties behave over the BEC-BCS crossover. We calculate the vortex excitation energy, density profiles, and vortex core properties related to the current. We find a density suppression at the vortex core on the BCS side of the crossover, and a depleted core on the BEC limit. Size-effect dependencies in the disk geometry were carefully studied.

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Lucas Madeira, Stefano Gandolfi, Kevin E. Schmidt. 2017-05-04. Core structure of two-dimensional Fermi gas vortices in the BEC-BCS crossover region. https://doi.org/10.1103/physreva.95.053603

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