Speaker
Dr
Keisuke Inomata
(University of Chicago, KICP)
Description
Rotations of axion fields in the early universe can produce dark matter and matter-antimatter asymmetry of the universe.
In a class of models, the equation of state of the rotations rapidly changes from a non-relativistic matter-like one to a kination-like one.
We point out that the rapid change can produce an observable amount of gravitational waves through the Poltergeist mechanism.
Author
Dr
Keisuke Inomata
(University of Chicago, KICP)
Co-authors
Dr
Keisuke Harigaya
(Institute for Advaned Study)
Takahiro Terada
(Institute for Basic Science)
