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Radial excitations of current-carrying vortices
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Radial excitations of current-carrying vortices
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We report on the existence of a new type of cosmic string solutions in the Witten model with U(1)xU(1) symmetry. These solutions are superconducting with radially excited condensates that exist for both gauge and ungauged currents. Our results suggest that these new configurations can be macroscopically stable, but microscopically unstable to radial perturbations. Nevertheless, they might have important consequences for the network evolution and particle emission. We discuss these effects and their possible signatures. We also comment on analogies with non-relativistic condensed matter systems where these solutions may be observable.
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Cited by 1 Pith paper
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Gravitational Waves from Superconducting Cosmic Strings
Lattice simulations show the gravitational-wave spectrum from superconducting cosmic strings develops a coupling-dependent suppression at high frequencies, distinguishing them from ordinary Abelian–Higgs strings.
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