Soliton annihilation in the perturbed sine-Gordon system
- 1 October 1984
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 30 (7), 4057-4059
- https://doi.org/10.1103/physrevb.30.4057
Abstract
Fluxon-antifluxon annihilation in the perturbed sine-Gordon equation with loss and driving terms is investigated. For the infinite line we find a simple analytic expression for the threshold driving term corresponding to annihilation. With the application of the results to a Josephson junction of finite length an expression for the current voltage characteristic of a zero-field step is derived. The analytical results are in good agreement with numerical simulations. The method is extendable to other systems.Keywords
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