2005/12/05 by Jose J. Blanco-Pillado, José J. Blanco-Pillado, Alberto Iglesias · 6 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Classical mechanics #Cosmic string #Cosmology and Gravitation Theories #Fermion #Mathematical physics #Non-critical string theory #Particle physics theoretical and experimental studies #Physics #Quantum electrodynamics #Quantum mechanics #Spacetime #String (physics) #String theory #Superstring theory #Supersymmetry #Theoretical physics #Worldsheet #astro-ph #gr-qc #hep-ph #hep-th
paper · pdf · doi:10.1016/j.physletb.2006.03.053
published in Physics Letters B 636(3-4), 207-211 (Elsevier BV) · 10 pages
arxiv created 2005/12/05 · openalex publication_date 2006/03/31 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
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.