Speaker
Zhaohui Xu
(University of Maryland, College Park)
Description
We study the realization of the chemical potential mechanism in cosmological collider physics in a robust model of inflation arising from multiple extra-dimensional gauge fields. We show that particles heavier than the inflationary Hubble scale can be created without suppression through minimal gauge interactions as the rolling inflaton background corresponds to an electric field in the extra dimension in which charged particles are produced analogously to the Schwinger mechanism. We also demonstrate how realistic models consistent with both theoretical and experimental constraints can be constructed along these lines.
Authors
Raman Sundrum
Zhaohui Xu
(University of Maryland, College Park)