The Trapped Polarized Fermi Gas at Unitarity

Abstract

We consider population-imbalanced two-component Fermi gases under external harmonic confinement interacting through short-range two-body potentials with diverging s-wave scattering length. Using the fixed-node diffusion Monte Carlo method, the energies of the "normal state" are determined as functions of the population-imbalance and the number of particles. The energies of the trapped system follow, to a good approximation, a universal curve even for fairly small systems. A simple parameterization of the universal curve is presented and related to the equation of state of the bulk system.

4 pages, 2 tables, 2 figures

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Cited by in corpus (10)

• Few-body physics with ultracold atomic and molecular systems in traps
• Superfluid Bose-Fermi mixture from weak-coupling to unitarity
• Time-Dependent Density Functional Theory and the Real-Time Dynamics of Fermi Superfluids
• Path integral Monte Carlo ground state approach: Formalism, implementation, and applications
• Probing strongly interacting atomic gases with energetic atoms
• Universality of the unitary Fermi gas: A few-body perspective
• Towards Quantum Turbulence in Cold Atomic Fermionic Superfluids
• Universal behavior of a trapped Fermi superfluid in the BCS-unitarity crossover
• Spin-imbalanced ultracold Fermi gases in a two-dimensional array of tubes
• On the kinetic energy of unitary Fermi gas in a harmonic trap