Cosmic Superstrings Stabilized by Fermions

Details Cosmic Superstrings Stabilized by Fermions Cosmic Superstrings Stabilized by Fermions

2005-12-05

arxiv.org/abs/hep-th/0512057v1

Phys.Lett. B636 (2006) 207-211

Physics

High Energy Physics

High Energy Physics - Theory

10 pages

Scientific paper

10.1016/j.physletb.2006.03.053

We show that there exist massive perturbative states of the ten dimensional Green-Schwarz closed superstring that are stabilized against collapse due to presence of fermionic zero modes on its worldsheet. The excited fermionic degrees of freedom backreact on the spacetime motion of the string in the same way as a neutral persistent current would, rendering these string loops stable. We point out that the existence of these states could have important consequences as stable loops of cosmological size as well as long lived states within perturbative string theory.

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