Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Unveiling topological order through multipartite entanglement   It is well known that the topological entanglement entropy ($S_{topo}$) of a
topologically ordered ground state in 2 spatial dimensions can be captured
efficiently by measuring the tripartite quantum information ($I^{3}$) of a
specific annular arrangement of three subsystems. However, the nature of the
general N-partite information ($I^{N}$) and quantum correlation of a
topologically ordered ground state remains unknown. In this work, we study such
$I^N$ measure and its nontrivial dependence on the arrangement of $N$
subsystems. For the collection of subsystems (CSS) forming a closed annular
structure, the $I^{N}$ measure ($N\geq 3$) is a topological invariant equal to
the product of $S_{topo}$ and the Euler characteristic of the CSS embedded on a
planar manifold, $|I^{N}|=\chi S_{topo}$. Importantly, we establish that
$I^{N}$ is robust against several deformations of the annular CSS, such as the
addition of holes within individual subsystems and handles between
nearest-neighbour subsystems. For a general CSS with multiple holes
($n_{h}>1$), we find that the sum of the distinct, multipartite informations
measured on the annular CSS around those holes is given by the product of
$S_{topo}$, $\chi$ and $n_{h}$,
$\sum^{n_{h}}_{\mu_{i}=1}|I^{N_{\mu_{i}}}_{\mu_{i}}| = n_{h}\chi S_{topo}$. The
$N^{th}$ order irreducible quantum correlations for an annular CSS of $N$
subsystems is also found to be bounded from above by $|I^{N}|$, which shows the
presence of correlations among subsystems arranged in the form of closed loops
of all sizes. Our results offer important insight into the nature of the
many-particle entanglement and correlations within a topologically ordered
state of matter.

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The categories of this paper are: hep-ex
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The categories of this paper are: bayes-an
36
The categories of this paper are: cmp-lg
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The categories of this paper are: chem-ph
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The categories of this paper are: q-fin
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The categories of this paper are: ao-sci
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The categories of this paper are: nucl-th
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The categories of this paper are: adap-org
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The categories of this paper are: funct-an
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The categories of this paper are: patt-sol
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The categories of this paper are: eess
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The categories of this paper are: physics
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The categories of this paper are: chao-dyn
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The categories of this paper are: supr-con
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The categories of this paper are: q-bio
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The categories of this paper are: econ