Moduli-induced axion problem

Research output: Contribution to journalArticlepeer-review

51 Citations (Scopus)


We point out that the cosmological moduli problem is not necessarily resolved even if the modulus mass is heavier than O(10) TeV, contrary to the common wisdom. The point is that, in many scenarios where the lightest moduli fields are stabilized by super symmetry breaking effects, those moduli fields tend to mainly decay into almost massless axions, whose abundance is tightly constrained by the recent Planck results. We study the moduli-induced axion problem in concrete examples, and discuss possible solutions. The problem and its solutions are widely applicable to decays of heavy scalar fields which dominate the energy density of the Universe, for instance, the reheating of the inflaton.

Original languageEnglish
Article number5
JournalJournal of High Energy Physics
Issue number7
Publication statusPublished - 2013


  • Cosmology of Theories beyond the SM
  • Supergravity Models


Dive into the research topics of 'Moduli-induced axion problem'. Together they form a unique fingerprint.

Cite this