# Ground state of a resonantly Interacting Bose gas

@article{Diederix2011GroundSO, title={Ground state of a resonantly Interacting Bose gas}, author={Jeroen Diederix and T.C.F. Van Heijst and H. T. C. Stoof}, journal={Physical Review A}, year={2011}, volume={84}, pages={033618} }

We show that a two-channel mean-field theory for a Bose gas near a Feshbach resonance allows for an analytic computation of the chemical potential, and therefore the universal constant β, at unitarity. To improve on this mean-field theory, which physically neglects condensate depletion, we study a variational Jastrow ansatz for the ground-state wave function and use the hypernetted-chain approximation to minimize the energy for all positive values of the scattering length. We also show that…

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