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Destruction of Fermion Zero Modes on Cosmic Strings

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Abstract

I examine the existence of zero-energy fermionsolutions (zero modes) on cosmic strings in an SO (10)grand unified theory. The current-carrying capability ofa cosmic string formed at one phase transition can be modified at subsequent phasetransitions. I show that the zero modes may be destroyedand the conductivity of the string altered. I discussthe cosmological implications of this, and show that it allows vorton bounds to be relaxed.

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  1. Stephen C. Davis
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Davis, S.C. Destruction of Fermion Zero Modes on Cosmic Strings. International Journal of Theoretical Physics 38, 2889–2900 (1999). https://doi.org/10.1023/A:1026647813522

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