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An Asymmetric Universe from Inflation

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Cosmological Implications of Quantum Anomalies

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Abstract

It is generally considered that the generation of the observed matter-antimatter asymmetry must have occurred after the inflationary epoch, as otherwise it would have been diluted away by the rapid spacetime expansion. In order to produce a significant asymmetry during inflation, the production rate of baryonic charge must exceed its dilution rate. Despite this challenge, it has been found that inflationary dynamics may be able to support such a scenario. By utilising the observation that, if a large baryonic charge density is created due to small-scale quantum fluctuations, it will typically be stretched out over large scales due to inflation. In the last decade mechanisms have been proposed to explore this idea, but with varying success.

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  1. Kavli Institute of Physics and Mathematics of the Universe, The University of Tokyo Kashiwa Campus, Kashiwa, Japan

    Neil David Barrie

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Barrie, N.D. (2018). An Asymmetric Universe from Inflation. In: Cosmological Implications of Quantum Anomalies. Springer Theses. Springer, Cham. https://doi.org/10.1007/978-3-319-94715-0_3

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