Speaker
Mathias Becker
(University of Padova)
Description
We present a new framework (ultra)light dark matter based on a scalar field experiencing boundaries in field space. These boundaries give rise to wallions, excitations whose masses are exponentially suppressed yet radiatively stable. After introducing the basic setup, we will discuss how wallions behave in the early universe, how field-space boundaries can form dynamically, and which probes may be sensitive to them.
| Main Contribution topic | Theory / Phenomenology |
|---|---|
| Secondary contribution topic | Cosmology Dark Matter |
Authors
Francesco D'Eramo
(University of Padova)
Mathias Becker
(University of Padova)
Ville Vaskonen
(NICPB Tallinn and INFN Padova)