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Title: Visualization of Vortex Bound States in Polarized Fermi Gases at Unitarity

Abstract

We theoretically analyze a single vortex in a spin polarized 3D trapped atomic Fermi gas near a broad Feshbach resonance. Above a critical polarization the Andreev-like bound states inside the core become occupied by the majority spin component. As a result, the local density difference at the core center suddenly rises at low temperatures. This provides a way to visualize the lowest bound state using phase-contrast imaging. As the polarization increases, the core expands gradually and the energy of the lowest bound state decreases.

Authors:
 [1];  [2]; ;  [3]
  1. Department of Physics, Renmin University of China, Beijing 100872 (China)
  2. (Australia)
  3. ARC Centre of Excellence for Quantum-Atom Optics, Department of Physics, University of Queensland, Brisbane, Queensland 4072 (Australia)
Publication Date:
OSTI Identifier:
20955437
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review Letters; Journal Volume: 98; Journal Issue: 6; Other Information: DOI: 10.1103/PhysRevLett.98.060406; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; BOUND STATE; FERMI GAS; POLARIZATION; RESONANCE; SPIN; SPIN ORIENTATION; TRAPPING; UNITARITY

Citation Formats

Hu Hui, ARC Centre of Excellence for Quantum-Atom Optics, Department of Physics, University of Queensland, Brisbane, Queensland 4072, Liu Xiaji, and Drummond, Peter D. Visualization of Vortex Bound States in Polarized Fermi Gases at Unitarity. United States: N. p., 2007. Web. doi:10.1103/PHYSREVLETT.98.060406.
Hu Hui, ARC Centre of Excellence for Quantum-Atom Optics, Department of Physics, University of Queensland, Brisbane, Queensland 4072, Liu Xiaji, & Drummond, Peter D. Visualization of Vortex Bound States in Polarized Fermi Gases at Unitarity. United States. doi:10.1103/PHYSREVLETT.98.060406.
Hu Hui, ARC Centre of Excellence for Quantum-Atom Optics, Department of Physics, University of Queensland, Brisbane, Queensland 4072, Liu Xiaji, and Drummond, Peter D. Fri . "Visualization of Vortex Bound States in Polarized Fermi Gases at Unitarity". United States. doi:10.1103/PHYSREVLETT.98.060406.
@article{osti_20955437,
title = {Visualization of Vortex Bound States in Polarized Fermi Gases at Unitarity},
author = {Hu Hui and ARC Centre of Excellence for Quantum-Atom Optics, Department of Physics, University of Queensland, Brisbane, Queensland 4072 and Liu Xiaji and Drummond, Peter D.},
abstractNote = {We theoretically analyze a single vortex in a spin polarized 3D trapped atomic Fermi gas near a broad Feshbach resonance. Above a critical polarization the Andreev-like bound states inside the core become occupied by the majority spin component. As a result, the local density difference at the core center suddenly rises at low temperatures. This provides a way to visualize the lowest bound state using phase-contrast imaging. As the polarization increases, the core expands gradually and the energy of the lowest bound state decreases.},
doi = {10.1103/PHYSREVLETT.98.060406},
journal = {Physical Review Letters},
number = 6,
volume = 98,
place = {United States},
year = {Fri Feb 09 00:00:00 EST 2007},
month = {Fri Feb 09 00:00:00 EST 2007}
}