Periodic cosmic string formation and dynamics

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Counter-rotating regions exhibit a periodic formation of string defects, leading to gravitational-wave production.
The study shows that small spatial perturbations grow through resonance, resulting in stable counter-rotating regions.
Numerical simulations in 2 + 1 and 3 + 1 dimensions demonstrate these dynamics in both Minkowski spacetime and an expanding universe.
Implications extend to models reliant on coherent field rotation, potentially influencing gravitational-wave frequency spectra.

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This analysis demonstrates string formation and dynamics in a scalar field with U(1) symmetry, suggesting implications for gravitational-wave bursts.

Fedderke et al. (2025) studied this question.

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This analysis demonstrates string formation and dynamics in a scalar field with U(1) symmetry, suggesting implications for gravitational-wave bursts.