  In this paper, we present evidence for a liquid-like phase in systems of many
interacting Bosons at intermediate densities. The interacting Bose gas has been
studied extensively in the low and high density regimes, in which interactions
do not play a physically significant role, and the system behaves similarly to
the ideal quantum gas. Instead, we will turn our attention to the intermediate
density regime, and report evidence that the system enters a strongly
correlated phase where its behavior is markedly different from that of the
ideal quantum gas. To do so, we use the Simplified approach to the Bose gas,
which was introduced by Lieb in 1963 and recently found to provide very
accurate predictions for many-Boson systems at all densities. Using this tool,
we will compute predictions for the radial distribution function, structure
factor, condensate fraction and momentum distribution, and show that they are
consistent with liquid-type behavior.
