Variational Wave Function for Inhomogeneous Bose--Einstein Condensate with 3/2-Body Correlations

Abstract

We construct a variational wave function for inhomogeneous weakly interacting Bose--Einstein condensates beyond the mean-field approximation by incorporating $3/2$-body correlations. From our numerical results calculated for a system trapped by a one-dimensional harmonic oscillator, the $3/2$-body correlations give a contribution comparable to the mean- field energy toward lowering the ground-state energy.

arXiv comment6 pages, 1 figure

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Cited by in corpus (1)

• Variational Approach to Many-Body Problems Incorporating Many-Body Effects at Finite Temperature