Quantum tunneling of superconducting string currents

Details Quantum tunneling of superconducting string currents Quantum tunneling of superconducting string currents

2002-02-13

arxiv.org/abs/hep-ph/0202116v1

Phys.Rev. D66 (2002) 023506

Physics

High Energy Physics

High Energy Physics - Phenomenology

16 pages, 2 figures

Scientific paper

10.1103/PhysRevD.66.023506

We investigate the decay of current on a superconducting cosmic string through quantum tunneling. We construct the instanton describing tunneling in a simple bosonic string model, and estimate the decay rate. The tunneling rate vanishes in the limit of a chiral current. This conclusion, which is supported by a symmetry argument, is expected to apply in general. It has important implications for the stability of chiral vortons.

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