PT Journal
AU Barenboim, G
   Park, WI
TI Spontaneous baryogenesis in spiral inflation
SO European Physical Journal C
JI Eur. Phys. J. C
PY 2019
BP 456 - 11pp
VL 79
IS 6
DI 10.1140/epjc/s10052-019-6970-6
LA English
AB 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.
ER