Non-gut baryogenesis and large scale structure of the universe

Details Non-gut baryogenesis and large scale structure of the universe Non-gut baryogenesis and large scale structure of the universe

Jul 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995ictp.rept.....k&link_type=abstract

Technical Report, International Centre for Theoretical Physics Trieste, Italy

Physics

Annihilation Reactions, Baryons, Antiparticles, Unified Field Theory, Quarks, Scalars, Universe, Density Distribution, Cosmology, Bose-Einstein Condensates, Electric Charge

Scientific paper

We discuss a mechanism for generating baryon density perturbations and study the evolution of the baryon charge density distribution in the framework of the low temperature baryogenesis scenario. This mechanism may be important for the large scale structure formation of the Universe and particularly, may be essential for understanding the existence of a characteristic scale of 130h-1 Mpc in the distribution of the visible matter. The detailed analysis showed that both the observed very large scale of the visible matter distribution in the Universe and the observed baryon asymmetry value could naturally appear as a result of the evolution of a complex scalar field condensate, formed at the inflationary stage. Moreover, according to our model, at present the visible part of the Universe may consist of baryonic and antibaryonic shells, sufficiently separated, so that annihilation radiation is not observed. This is an interesting possibility as far as the observational data of antiparticles in cosmic rays do not rule out the possibility of antimatter superclusters in the Universe.

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