dorsal/arxiv
View SchemaInduced vortex tunneling in a superconducting wire
| Authors | S. Khlebnikov |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0210019 |
| URL | https://arxiv.org/abs/quant-ph/0210019 |
Abstract
We consider induced topological transitions in a wire made from cylindrical superconducting film. During a transition, a pulse of electric current causes transport of a virtual vortex-antivortex pair around the cylinder. We consider both the instanton approach, in which the transition is viewed as motion of vortices in the Euclidean time, and the real-time dual formulation, in which vortices are described by a fundamental quantum field. The instanton approach is convenient to discuss effects of the environment, while in the dual formulation we show that there exists a potentially useful adiabatic regime, in which the probability to create a real vortex pair is exponentially suppressed, but the total transport of the vortex number can be of order one.
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"abstract": "We consider induced topological transitions in a wire made from cylindrical\nsuperconducting film. During a transition, a pulse of electric current causes\ntransport of a virtual vortex-antivortex pair around the cylinder. We consider\nboth the instanton approach, in which the transition is viewed as motion of\nvortices in the Euclidean time, and the real-time dual formulation, in which\nvortices are described by a fundamental quantum field. The instanton approach\nis convenient to discuss effects of the environment, while in the dual\nformulation we show that there exists a potentially useful adiabatic regime, in\nwhich the probability to create a real vortex pair is exponentially suppressed,\nbut the total transport of the vortex number can be of order one.",
"arxiv_id": "quant-ph/0210019",
"authors": [
"S. Khlebnikov"
],
"categories": [
"quant-ph",
"cond-mat.mes-hall",
"cond-mat.supr-con"
],
"title": "Induced vortex tunneling in a superconducting wire",
"url": "https://arxiv.org/abs/quant-ph/0210019"
},
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