Discrete R Symmetries and Domain Walls

Details Discrete R Symmetries and Domain Walls Discrete R Symmetries and Domain Walls

2010-05-20

arxiv.org/abs/1005.3613v1

JHEP 1007:003,2010

Physics

High Energy Physics

High Energy Physics - Theory

13 pages

Scientific paper

10.1007/JHEP07(2010)003

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.

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