Neutrino Zero Modes and Stability of Electroweak Strings

Abstract

We discuss massless and massive neutrino zero modes in the background of an electroweak string. We argue that the eventual absence of the neutrino zero mode implies the existence of topologically stable strings where the required non-trivial topology has been induced by the fermionic sector.

6 pages, 2 figures, Presented at DPF 2000: The Meeting of the Division of Particles and Fields of the American Physical Society, Columbus, Ohio, 9-12 Aug 2000. Proceedings to be published in International Journal of Modern Physics A

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