Conveners
BSM and the early universe
- Yvonne Wong (The University of New South Wales)
BSM and the early universe
- Jong-Chul Park (Chungnam National University)
We investigate the possibility of simultaneously explaining inflation, the neutrino masses and the baryon asymmetry through extending the Standard Model by a triplet Higgs. The neutrino masses are generated by the vacuum expectation value of the triplet Higgs, while a combination of the triplet and doublet Higgs' plays the role of the inflaton. Additionally, the dynamics of the triplet, and...
We propose a scenario of spontaneous leptogenesis in Higgs inflation with help from two additional operators: the Weinberg operator (Dim 5) and the derivative coupling of the Higgs field and the current of lepton number (Dim 6). The former is responsible for lepton number violation and the latter induces chemical potential for lepton number. The period of rapidly changing Higgs field,...
Recent findings on the Higgs-R2 inflationary scenario have significantly increased. Here we focus on the deep-R2 parameter region of the model and report its reheating behavior, comparing with other parameter regions and discuss its phenomenological consequences.
We study a generalized superconformal model that gives rise to a subcritical regime of D-term hybrid inflation. Formulating the model in a Jordan frame, the effective potential of the subcritical regime is derived in the Einstein frame. It turns out the inflaton-waterfall field dynamics leads to various types of inflaton potential. Consequently the tensor-to-scalar ratio is found to range from...
During inflation, a scalar field undergoes a quantum diffusion following the de-Sitter temperature. Aided by the greater Hubble rate at higher potential, the quantum diffusion can make the global distribution of the field climb up the potential. If the potential exhibits a criticality at the maximum point, the field distribution can be sharply located near there. We show a possibility from QCD...
