  The MSSM has flat directions in its scalar potential, along which it is
natural for Bose condensates of squarks to form in the early Universe. A baryon
asymmetry can be induced in these condensates via Affleck-Dine baryogenesis.
The condensates are unstable with respect to fragmentation to "B-balls",
solitons made of squarks and carrying baryon number, which, if they survive
thermalization, fill the Universe down to low temperatures, much lower than
that of the electroweak phase transition, with interesting cosmological
consequences. In particular, their decay implies a similar number density of
baryons and dark matter neutralinos, in accordance with observations. Evasion
of thermalization and the ability to account for the observed baryon asymmetry
requires a very low reheating temperature, which, it is argued, is a natural
feature of presently favoured D-term inflation models.
