B-L-symmetric Baryogenesis with Leptonic Quintessence

Abstract

We discuss a toy model where baryogenesis and cosmic acceleration are driven by a leptonic quintessence field coupled to the standard model sector via a massive mediating scalar field. It does not require the introduction of B-L-violating interactions below the inflationary scale. Instead, a B-L-asymmetry is stored in the quintessence field, which compensates for the corresponding observed baryon asymmetry.

6 pages, 4 figures, based on a talk at IRGAC 2006 (Barcelona, July 11-15 2006), accepted by Journal of Physics A