Shock waves in superconducting cosmic strings: instability to extrinsic perturbations

Details Shock waves in superconducting cosmic strings: instability to extrinsic perturbations Shock waves in superconducting cosmic strings: instability to extrinsic perturbations

2011-03-03

arxiv.org/abs/1103.0673v1

Zh.Eksp.Teor.Fiz. 140, 66 (2011)

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, 3 figures, accepted for publication in Sov. Phys. JETP

Scientific paper

We consider shock wave discontinuities of current and explain their impossibility in the "electric" regime (time-like currents) of superconducting string, that was previously discovered in numerical simulations. A shock wave can become unstable in the presence of infinitesimal perturbations of the string worldsheet (extrinsic perturbations). The shock waves in the "magnetic" regime are not vulnerable to this instability, but the shock waves in the "electric" regime do not survive.

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