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arXiv · 0811.1166

The ground state energy of the weakly interacting Bose gas at high density

Alessandro Giuliani·Robert Seiringer
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Abstract

We prove the Lee-Huang-Yang formula for the ground state energy of the 3D Bose gas with repulsive interactions described by the exponential function, in a simultaneous limit of weak coupling and high density. In particular, we show that the Bogoliubov approximation is exact in an appropriate parameter regime, as far as the ground state energy is concerned.

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Alessandro Giuliani, Robert Seiringer. 2008-11-07. The ground state energy of the weakly interacting Bose gas at high density. https://doi.org/10.1007/s10955-009-9718-0

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