Stability and free expansion of a dipolar Fermi gas

2007/11/28 by Liang He, L. He, J. -N. Zhang +3 · 2 citations
Physics and Astronomy · #Atomic and Subatomic Physics Research #Chemical physics #Cold Atom Physics and Bose-Einstein Condensates #Condensed matter physics #Deformation (meteorology) #Dipole #Fermi Gamma-ray Space Telescope #Fermi gas #Momentum (technical analysis) #Physics #Quantum mechanics #Quantum, superfluid, helium dynamics #Stability (learning theory) #Trap (plumbing) #Trapping #cond-mat.other

paper · pdf · doi:10.1103/physreva.77.031605

5 pages, 5 figures

arxiv created 2007/11/28 · openalex publication_date 2008/03/26 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We investigate the stability and the free expansion of a trapped dipolar Fermi gas. We show that stabilizing the system relying on tuning the trap geometry is generally inefficient. We further show that the expanded density profile always gets stretched along the attractive direction of dipolar interaction. We also point out that by switching off the dipolar interaction simultaneously with the trapping potential, the deformation of momentum distribution can be directly observed.

Citations

• Strong dipolar effects in a quantum ferrofluid
• Tuning the Dipolar Interaction in Quantum Gases
• Superfluidity of Trapped Dipolar Fermi Gases
• Bose-Einstein condensation with magnetic dipole-dipole forces
• Semiclassical theory of trapped fermionic dipoles
• Expansion of a quantum degenerate boson-fermion mixture

Cited by

• Study of a degenerate dipolar Fermi gas of161Dy atoms
• Tuning the Dipole-Dipole Interaction in a Quantum Gas with a Rotating Magnetic Field