Pasteur and Cosmic Asymmetry

Pasteur

Cosmic Microwave Background, Matter-Antimatter Asymmetry and Neutrino Masses

We study the implications of thermal leptogenesis for neutrino parameters. Assuming that decays of N1, the lightest of the heavy Majorana neutrinos, initiate baryogenesis, we show that the final baryon asymmetry is determined by only four parameters: the CP asymmetry ε1, the heavy neutrino mass M1, the effective light neutrino mass m̃1, and the quadratic mean m of the light neutrino masses. Impo...

Cosmic Topological Defects, Highest Energy Cosmic Rays, and the Baryon Asymmetry of the Universe

It is pointed out that the observed extremely high energy cosmic rays (EHECR) above 10 GeV and the observed baryon asymmetry of the Universe (BAU), both may have a common origin in baryon number violating decays of supermassive “X” particles released from cosmic topological defects (TDs) such as cosmic strings and monopoles. The X particles produced by TDs in the recent epochs produce the EHECR...

Louis Pasteur

detail, a valuable contribution and a positive demonstration of his "philology and erudition". The images receive, by comparison, cursory treatment. It is only after repeated perusals that the reader grasps how simple the material really is, basically three male-female pairs dateable to 1539 and their derivatives: the De Negker-Vogtherr set from Strasbourg; the Sabio set from Venice; and the Go...

Cosmic microwave background power asymmetry from non-Gaussian modulation.

Non-Gaussianity in the inflationary perturbations can couple observable scales to modes of much longer wavelength (even superhorizon), leaving as a signature a large-angle modulation of the observed cosmic microwave background power spectrum. This provides an alternative origin for a power asymmetry that is otherwise often ascribed to a breaking of statistical isotropy. The non-Gaussian modulat...