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.Comment: 7 pages, 2 figures, paper presented at 14th Rencontres de Blois:
Matter - Antimatter Asymmetry, Chateau de Blois, France, 17-22 Jun 2002, to
be published in the proceedings, ed. J. Tran Thanh Va
