Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Polar Jahn-Teller centers and magnetic neutron scattering cross-section
  in copper oxides   In the framework of the model of the polar singlet-triplet Jahn-Teller
centers the cross-section is obtained for magnetic neutron scattering in
high-$T_{c}$ cuprates. Multi-mode character of the $CuO_{4}$ cluster ground
manifold in the new phase of polar centers determines the dependence of
magnetic form-factor on the local structure and charge state of the center. It
is shown that magnetic inelastic neutron scattering in the system of the polar
singlet-triplet Jahn-Teller centers permits to investigate the non-magnetic
charge and structure excitations.

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The categories of this paper are: gr-qc
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The categories of this paper are: hep-ex
36
The categories of this paper are: cmp-lg
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The categories of this paper are: q-bio
27
The categories of this paper are: comp-gas
9
The categories of this paper are: nlin
30
The categories of this paper are: q-alg
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The categories of this paper are: astro-ph
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The categories of this paper are: hep-th
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The categories of this paper are: math-ph
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The categories of this paper are: adap-org
20
The categories of this paper are: acc-phys
37
The categories of this paper are: supr-con
15
The categories of this paper are: nucl-ex
11
The categories of this paper are: hep-lat
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The categories of this paper are: q-fin