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arXiv · 1901.05799

Spontaneous baryogenesis in spiral inflation

Gabriela Barenboim·Wan-Il Park
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Abstract

We examined the possibility of spontaneous baryogenesis driven by the inflaton in the scenario of \textit{spiral inflation}, and found the parametric dependence of the late-time baryon number asymmetry. As a result, it is shown that, depending on the effective coupling of baryon/lepton number violating operators, it is possible to obtain the right amount of asymmetry even in the presence of a matter-domination era as long as such era is relatively short. In a part of the parameter space, the required expansion rate during inflation is close to the current upper-bound, and hence can be probed in the near future experiments.

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Gabriela Barenboim, Wan-Il Park. 2019-01-17. Spontaneous baryogenesis in spiral inflation. https://doi.org/10.1140/epjc%2Fs10052-019-6970-6

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