Vortex line in the unitary Fermi gas

Abstract

We report diffusion Monte Carlo results for the ground state of unpolarized spin-1/2 fermions in a cylindrical container and properties of the system with a vortex-line excitation. The density profile of the system with a vortex line presents a non-zero density at the core. We calculate the ground-state energy per particle, the superfluid pairing gap, and the excitation energy per particle. These simulations can be extended to calculate the properties of vortex excitations in other strongly interacting systems, such as superfluid neutron matter using realistic nuclear Hamiltonians.

7 pages, 5 figures

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• Bose-Einstein condensation in spherically symmetric traps
• Quantum turbulence in Bose-Einstein condensates: present status and new challenges ahead
• Core structure of two-dimensional Fermi gas vortices in the BEC-BCS crossover region
• Vortices in low-density neutron matter and cold Fermi gases
• Interaction Quench Dynamics and Stability of Quantum Vortices in Rotating Bose-Einstein Condensates
• Quantum Monte Carlo studies of a trimer scaling function with microscopic two- and three-body interactions
• Cold atoms beyond atomic physics
• The role of the effective range in strongly-interacting few-body systems