13-16 August 2019
Kane Hall 225
US/Pacific timezone

The warped dark sector

15 Aug 2019, 10:05
Walker-Ames (Kane Hall 225)


Kane Hall 225


Dr sylvain fichet


Five-dimensional braneworld constructions in anti-de Sitter space naturally lead to dark sector
scenarios in which parts of the dark sector vanish at high 4d momentum or temperature. In the
language of modified gravity, such feature implies a new mechanism for hiding light scalars, as well
as the possibility of UV-completing chameleon-like effective theories. In the language of dark matter
phenomenology, the high-energy behaviour of the mediator sector changes dark matter observational
complementarity. A multitude of signatures—including exotic ones—are present from laboratory
to cosmologic scales, including long-range forces with non-integer behaviour, periodic signals at
colliders, “soft bombs” events well-known from conformal theories, as well as a dark phase transition
and a typically small amount of dark radiation.

Ref: https://arxiv.org/abs/1906.02199

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