Gravitational baryogenesis

Hooman Davoudiasl, Ryuichiro Kitano, Graham D. Kribs, Hitoshi Murayama, Paul J. Steinhardt

Research output: Contribution to journalArticlepeer-review

189 Scopus citations


A framework for baryogenesis where CP violation lies in a gravitational interaction was presented. It was found that the expansion of the Universe promotes the microscopic CP violation to a dynamical violation of CPT that shifts the relative energies of particles and antiparticles. It was also found that the CP-conserving B-violating interaction in equilibrium create the asymmetry when the B-violating interaction decouples. The results show that a gravitational interaction between the derivative of the Ricci scalar curvature and the baryon-number current dynamically breaks CPT in expanding universe.

Original languageEnglish (US)
Article number201301
Pages (from-to)201301-1-201301-4
JournalPhysical review letters
Issue number20
StatePublished - Nov 12 2004

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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