Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Visualizing operators of coupled spin systems   The state of quantum systems, their energetics, and their time evolution is
modeled by abstract operators. How can one visualize such operators for coupled
spin systems? A general approach is presented which consists of several shapes
representing linear combinations of spherical harmonics. It is applicable to an
arbitrary number of spins and can be interpreted as a generalization of Wigner
functions. The corresponding visualization transforms naturally under
non-selective spin rotations as well as spin permutations. Examples and
applications are illustrated for the case of three spins 1/2.

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The categories of this paper are: q-alg
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The categories of this paper are: adap-org
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The categories of this paper are: chao-dyn
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The categories of this paper are: patt-sol
15
The categories of this paper are: nucl-ex
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The categories of this paper are: chem-ph
10
The categories of this paper are: q-bio
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The categories of this paper are: hep-lat
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The categories of this paper are: astro-ph
3
The categories of this paper are: physics
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The categories of this paper are: hep-ex
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The categories of this paper are: atom-ph
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The categories of this paper are: cmp-lg
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The categories of this paper are: econ
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The categories of this paper are: mtrl-th
5
The categories of this paper are: gr-qc