We present a new mechanism of spontaneous baryogenesis. Usually such mechanisms require a derivative coupling between a scalar field and baryon current. In our model, the scalar field instead derivatively couples to a current associated with some global symmetry [Formula presented]. In this case, baryogenesis is still possible provided that an interaction exists, which violates the baryon and [Formula presented] symmetries simultaneously. As a concrete example, we discuss baryogenesis in a flat direction with neither baryon nor lepton charge.
ASJC Scopus subject areas
- Physics and Astronomy(all)