Discrete R symmetries and domain walls

Michael Dine, Fuminobu Takahashi, Tsutomu T. Yanagida

Research output: Contribution to journalArticlepeer-review

25 Citations (Scopus)


Discrete R symmetries are interesting from a variety of points of view. They raise the specter, however, of domain walls, which may be cosmologically problematic. In this note, we describe some of the issues. In many schemes for supersymmetry breaking, as we explain, satisfying familiar constraints such as suppression of gravitino production, insures that the domain walls are readily inflated away. However, in others, they form after inflation. In these cases, it is necessary that they annihilate. We discuss possible breaking mechanisms for the discrete symmetries, and the constraints they must satisfy so that the walls annihilate effectively.

Original languageEnglish
Article number3
JournalJournal of High Energy Physics
Issue number7
Publication statusPublished - 2010


  • Anomalies in field and string theories
  • Cosmology of theories beyond the sm
  • Discrete and Finite Symmetries
  • Supergravity models


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