https://doi.org/10.1140/epjc/s10052-019-6970-6
Regular Article - Theoretical Physics
Spontaneous baryogenesis in spiral inflation
1
Departament de Física Teòrica and IFIC, Universitat de València-CSIC, 46100, Burjassot, Spain
2
Division of Science Education and Institute of Fusion Science, Chonbuk National University, Jeonju, 54896, Korea
* e-mail: wipark@jbnu.ac.kr
Received:
29
January
2019
Accepted:
20
May
2019
Published online:
30
May
2019
We examined the possibility of spontaneous baryogenesis driven by the inflaton in the scenario of 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.
© The Author(s), 2019
