We explore the gravitational baryogenesis paradigm in the homogeneous and
isotropic cosmology of generalized coupling gravity and, insbesondere, of the
so-called Minimal Exponential Measure Model (MEMe). We show that, also in this
theory, the time derivative of the Ricci scalar couples with matter currents
and can preserve an unbalance in the baryon-antibaryon number beyond thermal
equilibrium. Using the current bounds on the ratio of baryon number to entropy
density, we can considerably improve the known constraints on the parameter q
that characterizes the MEMe model. This estimate also allows us to draw
stringent constraints on the spatial curvature of the cosmological model.

Dieser Artikel untersucht Zeitreisen und deren Auswirkungen.

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