Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Fluxon interaction with the finite-size dipole impurity   Interaction of the fluxon with the finite size dipole impurity in the long
Josephson junction is investigated. The impurity has polarity and will be
referred to as a {\it dipole} impurity because it also has a direction and,
consequently, changes its sign under the space inversion transform $x \to -x$.
Such a model is used to describe the inductively coupled to the Josephson
transmission line qubit and the misaligned Abrikosov vortex that penetrates
into the long Josephson junction. We derive the approximate equations of motion
for the fluxon center of mass and its velocity. With the help of these
equations we demonstrate that pinning and scattering of the fluxon on the
impurity differs significantly from the case of the point impurity which is
modelled by the derivative of the Dirac's $\delta$-function

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The categories of this paper are: hep-ex
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The categories of this paper are: math-ph
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The categories of this paper are: ao-sci
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The categories of this paper are: acc-phys
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The categories of this paper are: hep-th
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The categories of this paper are: cs
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The categories of this paper are: eess
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The categories of this paper are: astro-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: nucl-ex
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The categories of this paper are: stat
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The categories of this paper are: comp-gas
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The categories of this paper are: plasm-ph
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The categories of this paper are: cmp-lg
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The categories of this paper are: quant-ph
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The categories of this paper are: atom-ph