Note on gravitational baryogenesis

2007/09/30 by H. Mohseni Sadjadi
Mathematics · Physics and Astronomy · #Astrophysics #Asymmetry #Baryogenesis #Baryon #Baryon asymmetry #Baryon number #Black Holes and Theoretical Physics #Classical mechanics #Cosmology #Cosmology and Gravitation Theories #Curvature #Dark energy #Equation of state #Friedmann equations #Galaxies: Formation, Evolution, Phenomena #Gravitation #Mathematical physics #Mathematics #Metric expansion of space #Particle physics #Physics #Quantum mechanics #Scalar (mathematics) #Scalar curvature #Theoretical physics #Universe #gr-qc #hep-th

paper · pdf · doi:10.1103/physrevd.76.123507

published as Phys.Rev.D76:123507,2007 · 10 pages, accepted for publication in Physical Review D

arxiv created 2007/11/10 · openalex publication_date 2007/12/19 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

The coupling between Ricci scalar curvature and the baryon number current dynamically breaks CPT in an expanding universe and leads to baryon asymmetry. We study the effect of time dependence of the equation of state parameter of the Friedmann-Robertson-Walker universe on this asymmetry.

Citations

• Baryogenesis inf(R)theories of gravity
• Cosmological evolution of interacting phantom energy with dark matter
• Reheating stage after inflation
• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Preliminary Maps and Basic Results
• Cosmologies with energy exchange
• Baryogenesis at Low Reheating Temperatures