I will discuss the recent update about the Higgs inflation where the Higgs field is regarded as the inflaton field. The unitarity issue, (p)re-heating issue and the potential production of primordial black hole will be discussed.
We point out that two models that reconcile the neutron lifetime anomaly via dark decays of the neutron, also predict dark matter-neutron ($\bar{\chi}-n$) annihilation that may be observable in neutron-antineutron oscillation and proton decay searches at Super-Kamiokande, Hyper-Kamiokande and DUNE. We study signatures of $\bar{\chi}n\to \gamma\pi^0$~(or multi-$\pi^0$) and $\bar{\chi}n\to...