4.6 Article

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

期刊

PHYSICAL REVIEW A
卷 95, 期 5, 页码 -

出版社

AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.95.053603

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资金

  1. National Science Foundation [PHY-1404405, ACI-1053575]
  2. NUCLEI SciDAC program
  3. US DOE [DE-AC52-06NA25396]
  4. LANL LDRD program
  5. Office of Science of the US Department of Energy [DE-AC02-05CH11231]
  6. Direct For Mathematical & Physical Scien
  7. Division Of Physics [1404405] Funding Source: National Science Foundation

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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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