@inproceedings{Lieb2001TheGS,
title={The ground state of the Bose gas},
author={E. Lieb and R. Seiringer and J. P. Solovej and J. Yngvason},
year={2001}
}

Now that the low temperature properties of quantum-mechanical many-body systems (bosons) at low density, $\rho$, can be examined experimentally it is appropriate to revisit some of the formulas deduced by many authors 4-5 decades ago. For systems with repulsive (i.e. positive) interaction potentials the experimental low temperature state and the ground state are effectively synonymous -- and this fact is used in all modeling. In such cases, the leading term in the energy/particle is $2\pi\hbar… CONTINUE READING