Vast Antimatter Regions and Scalar Condensate Baryogenesis
  The possibility of natural and abundant creation of antimatter in the Universe in a SUSY-baryogenesis model with a scalar field condensate is described. This scenario predicts vast quantities of antimatter, corresponding to galaxy and galaxy cluster scales today, separated from the matter ones by baryonically empty voids. Theoretical and observational constraints on such antimatter regions are discussed. 
D. Kirilova, M. Panayotova, T. Valchanov