Baryogenesis from a modulus dominated universe

• String/ M-theory compactifications predict the existence of a modulus field with a mass of 100-10000TeV. Its decay at MeV-temperatures generates large amounts of entropy and washes out any previously produced baryon asymmetry. We describe how the baryon asymmetry can be (re)generated by the modulus decay. The mechanism relates the smallness of the asymmetry to the hierarchy between the Planck- and the Fermi-scale.

Subject headings

NATURVETENSKAP  -- Fysik (hsv//swe)

NATURAL SCIENCES  -- Physical Sciences (hsv//eng)

Keyword

baryon asymmetry

string theory and cosmology

supersymmetry and cosmology

Publication and Content Type

ref (subject category)

art (subject category)