arXiv:hep-ph/0403019·v1·High Energy Physics — Phenomenology
Gravitational Baryogenesis
Hooman Davoudiasl🇺🇸 · Ryuichiro Kitano🇺🇸 · Graham D. Kribs🇺🇸 · Hitoshi Murayama🇺🇸 · Paul J. Steinhardt (IAS)🇺🇸
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.
Comments: Revtex4, 4 pages, two figures