Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Entanglement, Mixedness, and Spin-Flip Symmetry in Multiple-Qubit
  Systems   A relationship between a recently introduced multipartite entanglement
measure, state mixedness, and spin-flip symmetry is established for any finite
number of qubits. It is also shown that, within those classes of states
invariant under the spin-flip transformation, there is a complementarity
relation between multipartite entanglement and mixedness. A number of example
classes of multiple-qubit systems are studied in light of this relationship.

36
The categories of this paper are: cmp-lg
33
The categories of this paper are: plasm-ph
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The categories of this paper are: mtrl-th
25
The categories of this paper are: patt-sol
12
The categories of this paper are: nucl-th
6
The categories of this paper are: astro-ph
10
The categories of this paper are: q-bio
21
The categories of this paper are: adap-org
27
The categories of this paper are: comp-gas
8
The categories of this paper are: hep-ex
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The categories of this paper are: acc-phys
11
The categories of this paper are: hep-lat
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The categories of this paper are: dg-ga
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The categories of this paper are: eess
18
The categories of this paper are: econ
0
The categories of this paper are: hep-ph