Density functional theory for fermions close to the unitary regime

Details Density functional theory for fermions close to the unitary regime Density functional theory for fermions close to the unitary regime

2006-02-16

arxiv.org/abs/nucl-th/0602050v1

Phys.Rev.A74:041602,2006

Physics

Nuclear Physics

Nuclear Theory

4 pages, 2 figures

Scientific paper

10.1103/PhysRevA.74.041602

We consider interacting Fermi systems close to the unitary regime and compute the corrections to the energy density that are due to a large scattering length and a small effective range. Our approach exploits the universality of the density functional and determines the corrections from the analyical results for the harmonically trapped two-body system. The corrections due to the finite scattering length compare well with the result of Monte Carlo simulations. We also apply our results to symmetric neutron matter.

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