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RESEARCH PRODUCT
Spontaneous baryogenesis in spiral inflation
Wan-il ParkGabriela Barenboimsubject
Particle physicsPhysics and Astronomy (miscellaneous)media_common.quotation_subjectFOS: Physical scienceslcsh:AstrophysicsAstrophysics::Cosmology and Extragalactic AstrophysicsParameter space01 natural sciencesAsymmetryHigh Energy Physics - Phenomenology (hep-ph)0103 physical scienceslcsh:QB460-466lcsh:Nuclear and particle physics. Atomic energy. Radioactivity010306 general physicsEngineering (miscellaneous)media_commonInflation (cosmology)Physics010308 nuclear & particles physicsHigh Energy Physics::PhenomenologyInflatonLepton numberBaryonBaryogenesisHigh Energy Physics - Phenomenologylcsh:QC770-798Baryon numberdescription
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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2019-01-17 | European Physical Journal C: Particles and Fields |