Relaxation leptogenesis, isocurvature perturbations, and the cosmic
  infrared background
  Observations of cosmic infrared background (CIB) radiation exhibit
significant fluctuations on small angular scales. A number of explanations have
been put forth, but there is currently no consensus on the origin of these
large fluctuations. We consider the possibility that small-scale fluctuations
in matter-antimatter asymmetry could lead to variations in star formation rates
which are responsible for the CIB fluctuations. We show that the recently
proposed Higgs relaxation leptogenesis mechanism can produce such small-scale
baryonic isocurvature perturbations which can explain the observed excess in
the CIB fluctuations.
