Interesting consequences of brane cosmology
Abstract
We discuss the cosmology in four dimensions within a context of brane-world scenario. Such models can predict chaotic inflation with very low reheat temperature depending on the brane tension. We study the perturbative production of gravitinos in the frame-work of brane cosmology and we notice that tuning the brane tension or the five dimensional Planck mass it is possible to obtain a very small abundance for gravitinos. We also study Afleck-Dine mechanism for baryogenesis in our toy model and we notice that it is possible to attain an observed baryon asymmetry which depends on the brane tension but not on the mass parameter responsible for lifting the flat directions in broken supersymmetric theories.Keywords
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