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

被引：12

作者：

Madeira, Lucas ^{[1
]}

Gandolfi, Stefano ^{[2
]}

Schmidt, Kevin E. ^{[1
]}

机构：

[1] Arizona State Univ, Dept Phys, Tempe, AZ 85287 USA

[2] Los Alamos Natl Lab, Theoret Div, Los Alamos, NM 87545 USA

来源：

PHYSICAL REVIEW A | 2017年 / 95卷 / 05期

基金：

美国国家科学基金会;

关键词：

LONG-RANGE ORDER; BOSE-CONDENSATION; SUPERFLUID HE-4; DIMENSIONS; VORTEX; SOLIDS; MATTER;

D O I：

10.1103/PhysRevA.95.053603

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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.

引用

页数：9

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