Submitted:
26 June 2026
Posted:
30 June 2026
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Abstract
We perturbatively study kinks in the discrete Josephson transmission line and non-linear Klein-Gordon $(\phi^4$ and sine-Gordon) chains. The expansion parameter of the perturbation theory is the ratio of the system period to the kink width. The next to leading order approximation changes the shape of the kinks calculated previously in the leading order approximation.
Keywords:
Klein-Gordon chains
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