Small neutrino masses from chiral gravitational anomaly

The most popular directions of model building beyond the Standard Model usually focus on new phenomena at short distances, corresponding to high-energy scales. As an alternative direction, we have developed a novel class of possible low-energy solutions to the neutrino mass and strong-CP problems at a new infrared gravitational scale, which is numerically coincident with the scale of dark energy. In my talk, I will mainly focus on the gravitational neutrino mass mechanism and will discuss some of the model's phenomenological implications, in particular the weakened cosmological neutrino mass bounds, enhanced neutrino decays, and soft topological defects.

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Friday, November 30, 2018 - 13:00 to 14:30
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