TY - JOUR
T1 - Discrete R symmetries and domain walls
AU - Dine, Michael
AU - Takahashi, Fuminobu
AU - Yanagida, Tsutomu T.
PY - 2010
Y1 - 2010
N2 - 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.
AB - 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.
KW - Anomalies in field and string theories
KW - Cosmology of theories beyond the sm
KW - Discrete and Finite Symmetries
KW - Supergravity models
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U2 - 10.1007/JHEP07(2010)003
DO - 10.1007/JHEP07(2010)003
M3 - Article
AN - SCOPUS:77954986113
SN - 1029-8479
VL - 2010
JO - Journal of High Energy Physics
JF - Journal of High Energy Physics
IS - 7
M1 - 3
ER -