Generating Luminous and Dark Matter During Inflation

Abstract

We propose a new mechanism for generating both luminous and dark matter during cosmic inflation. According to this mechanism, ordinary and dark matter carry common charge which is associated with an anomalous $U(1{)}_X$ group. Anomaly terms source $\mathcal{C}\mathcal{P}$ and $U(1{)}_X$ charge violating processes during inflation, producing corresponding non-zero Chern-Simons numbers which are subsequently reprocessed into baryon and dark matter densities. The general framework developed is then applied to two possible extensions of the Standard Model with anomalous gauged $B$ and $B-L$, each with an additional dark matter candidate.

Comments: 14 pages