Superconducting cosmic string loops emit vector radiation whose strength is fitted in this paper; including this channel suppresses the predicted gravitational wave background for strong coupling and can make the spectrum compatible with NANOGrav for large currents.
Dynamics and integrability property of the chiral string model
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abstract
The effect of fermionic string conductivity by purely right (or purely left) moving ``zero modes'' is shown to be governed by a simple Lagrangian characterising a certain ``chiral'' (null current carrying) string model whose dynamical equations of motion turn out to be explicitly integrable in a flat spacetime background.
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Stochastic Gravitational Wave Background from Chiral Superconducting Cosmic Strings
Superconducting cosmic string loops emit vector radiation whose strength is fitted in this paper; including this channel suppresses the predicted gravitational wave background for strong coupling and can make the spectrum compatible with NANOGrav for large currents.