Models of baryogenesis via spontaneous Lorentz violation

Oct, 2005
25 pages
Published in:
  • Phys.Rev.D 73 (2006) 103515
e-Print:
Report number:
  • EFI-2005-17

Citations per year

200620112016202120240246810
Abstract:
In the presence of background fields that spontaneously violate Lorentz invariance, a matter-antimatter asymmetry can be generated even in thermal equilibrium. In this paper we systematically investigate models of this type, showing that either high-energy or electroweak versions of baryogenesis are possible, depending on the dynamics of the Lorentz-violating fields. In addition to the previously-studied models of spontaneous baryogenesis and quintessential baryogenesis, we identify two scenarios of interest: baryogenesis from a pseudo-Nambu-Goldstone boson with weak-scale mass and intermediate-scale baryon-number violation, and sphaleron-induced baryogenesis driven by a constant-magnitude vector with a late-time phase transition.
  • 98.80.Cq
  • baryon: production
  • baryon: asymmetry
  • violation: Lorentz
  • spontaneous symmetry breaking
  • background field: vector
  • baryon number: violation
  • Goldstone particle
  • sphaleron: effect
  • critical phenomena