Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Propagation and jamming dynamics in Heisenberg spin ladders   We investigate the propagation dynamics of initially localized excitations in
spin-1/2 Heisenberg ladders. We consider initial states with two overturned
spins, either on neighboring sites on the same leg or on the two sites of a
single rung, in an otherwise polarized (ferromagnetic) background. Compared to
the corresponding dynamics in a chain (single leg), we observe several
additional modes of propagation. We connect these propagation modes to features
of the spectrum of the ladder system, and to different effective models
corresponding to different segments of the spectrum. In addition to the regular
propagation modes, we observe for one mode a peculiar `jamming' dynamics where
components of the excitations remain localized in an unusual manner. A
comparison with the spin-1 bilinear-biquadratic chain is developed and
explored, where a similar phenomenon is shown to occur.

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The categories of this paper are: mtrl-th
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The categories of this paper are: chao-dyn
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The categories of this paper are: adap-org
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The categories of this paper are: bayes-an
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The categories of this paper are: q-bio
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The categories of this paper are: chem-ph
11
The categories of this paper are: hep-lat
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The categories of this paper are: nlin
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The categories of this paper are: patt-sol
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The categories of this paper are: atom-ph
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The categories of this paper are: plasm-ph
6
The categories of this paper are: astro-ph
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The categories of this paper are: nucl-th
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The categories of this paper are: stat
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The categories of this paper are: math-ph
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The categories of this paper are: q-alg