The Fate of Cosmic String Zero Modes
Anne-Christine Davis, Stephen C. Davis, Warren B. Perkins
Abstract
Cosmic strings in realistic particle physics models have fermion zero modes in the string core. Such zero modes change the underlying cosmology; for example, the string can carry a current. We consider the stability of fermion zero modes to interactions with particles in the surrounding plasma. We also consider cosmological constraints on such theories, particulary those with a chiral fermion zero mode, such as arises in a class of supersymmetric models.
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