title: Gravitational baryogenesis.
abstract: We show that a gravitational interaction between the derivative of the Ricci scalar curvature and the baryon-number current dynamically breaks CPT in an expanding Universe and, combined with baryon-number-violating interactions, can drive the Universe towards an equilibrium baryon asymmetry that is observationally acceptable.
authors.affiliation: School of Natural Sciences, Institute for Advanced Study, Princeton, New Jersey 08540, USA.
authors.forename: Hooman
authors.initials: H
authors.lastname: Davoudiasl
authors.forename: Ryuichiro
authors.initials: R
authors.lastname: Kitano
authors.forename: Graham D
authors.initials: GD
authors.lastname: Kribs
authors.forename: Hitoshi
authors.initials: H
authors.lastname: Murayama
authors.forename: Paul J
authors.initials: PJ
authors.lastname: Steinhardt