| 报告题目： |
The Minimal GUT with Inflaton and Dark Matter Unification |
| 报告人： |
李田军 |
| 报告人单位： |
中国科学院理论物理研究所 |
| 报告时间： |
2017年11月7日上午10:00 |
| 报告地点： |
东七楼，427室（四楼） |
| 报告摘要： |
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Giving up the solutions to the fine-tuning problems, we propose the non-supersymmetric flipped SU(5) × U(1) model based on the minimal particle content principle, which can be constructed from the four-dimensional SO(10) models, five-dimensional orbifold SO(10) models, and local F-theory SO(10) models. To achieve gauge coupling unification, we introduce one pair of vector-like fermions, which form complete SU(5) × U(1)
representation. Proton lifetime is around 5×10^{35} years, neutrino masses and mixing can be explained via seesaw mechanism, baryon asymmetry can be generated via leptogenesis, and vacuum stability problem can be solved as well. In particular, we propose that inflaton and dark matter particle can be unified to a real scalar field with Z_2 symmetry, which is not an axion and does not
have the non-minimal coupling to gravity. Such kind of scenarios can be applied to the generic scalar dark matter models. Alternatively, we shall comment on Higgs inflation, and point out that \xi can be small around 100. Thus, the problem in the Higgs inflation can be solved as well.
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