Asymmetric dark matter with a possible Bose-Einstein condensate

We investigate the properties of a Bose gas with a conserved charge as a dark matter candidate, taking into account the restrictions imposed by relic abundance, direct and indirect detection limits, big-bang nucleosynthesis and large scale structure formation constraints. We consider both the WIMP-like scenario of dark matter masses ≳1 GeV, and the small mass scenario, with masses ≲10−11 eV. We determine the conditions for the presence of a Bose-Einstein condensate at early times, and at the present epoch.