Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Polarized edge state emission from topological spin phases of trapped
  Rydberg excitons in Cu$_2$O   In one dimensional chains of trapped Rydberg excitons in cuprous oxide
semiconductor the topological spin phase has been recently predicted [Phys.
Rev. Lett. 123, 126801 (2019); arXiv:1903.11951]. This phase is characterized
by the diluted antiferromagnetic order of $p$-shell exciton angular momenta-$1$
and the edge states behaving akin spin-$1/2$ fermions. Here we study the
properties of the ground state in the finite chains and its fine structure
resulting from the effective interaction of the edge spins. We demonstrate that
these edge states can detected optically via the enhancement of the circular
polarization of the edge emission as compared with the emission from the bulk.
We calculate the distribution of the exciton angular momentum vs. trap number
in the chain numerically and analytically based on the variational ansatz.

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The categories of this paper are: hep-lat
35
The categories of this paper are: mtrl-th
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The categories of this paper are: cmp-lg
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The categories of this paper are: supr-con
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The categories of this paper are: plasm-ph
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The categories of this paper are: econ
34
The categories of this paper are: chem-ph
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The categories of this paper are: cs
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The categories of this paper are: hep-th
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The categories of this paper are: physics
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The categories of this paper are: math
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The categories of this paper are: nucl-th
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The categories of this paper are: patt-sol
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The categories of this paper are: nucl-ex
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The categories of this paper are: acc-phys
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The categories of this paper are: stat