Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Statistics of off-diagonal entries of Wigner $K$-matrix for chaotic wave
  systems with absorption   Using the Random Matrix Theory approach we derive explicit distributions of
the real and imaginary parts for off-diagonal entries of the Wigner reaction
matrix $\mathbf{K}$ for wave chaotic scattering in systems with and without
time-reversal invariance, in the presence of an arbitrary uniform absorption.

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The categories of this paper are: q-bio
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The categories of this paper are: physics
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The categories of this paper are: hep-lat
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The categories of this paper are: comp-gas
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The categories of this paper are: bayes-an
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The categories of this paper are: econ
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The categories of this paper are: chem-ph
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The categories of this paper are: adap-org
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The categories of this paper are: hep-ex
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The categories of this paper are: solv-int
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The categories of this paper are: hep-ph
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The categories of this paper are: hep-th
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The categories of this paper are: astro-ph
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The categories of this paper are: supr-con
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The categories of this paper are: acc-phys
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The categories of this paper are: cs