Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: An Index for Ray Operators in 5d $E_n$ SCFTs   We construct an index for BPS operators supported on a ray in five
dimensional superconformal field theories with exceptional global symmetries.
We compute the $E_n$ representations (for $n=2,\dots,7$) of operators of low
spin, thus verifying that while the expression for the index is only
SO$(2n-2)\times$U(1) invariant, the index itself exhibits the full $E_n$
symmetry (at least up to the order we expanded). The ray operators we studied
in 5d can be viewed as generalizations of operators constructed in a Yang-Mills
theory with fundamental matter by attaching an open Wilson line to a quark. For
$n\le 7$, in contrast to local operators, they carry nontrivial charge under
the $\mathbb{Z}_{9-n}\subset E_n$ center of the global symmetry. The
representations that appear in the ray operator index are therefore different,
for $n\le 7$, from those appearing in the previously computed superconformal
index. For $3\le n\le 7$, we find that the leading term in the index is a
character of a minuscule representation of $E_n$. We also discuss the case
$n=8$, which presents a unique technical challenge, and remains an open
problem.

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The categories of this paper are: q-alg
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The categories of this paper are: acc-phys
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The categories of this paper are: cs
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The categories of this paper are: comp-gas
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The categories of this paper are: hep-lat
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The categories of this paper are: astro-ph
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The categories of this paper are: math
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The categories of this paper are: plasm-ph
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The categories of this paper are: eess
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The categories of this paper are: supr-con
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The categories of this paper are: chao-dyn
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The categories of this paper are: nlin
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The categories of this paper are: hep-ph
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The categories of this paper are: mtrl-th
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The categories of this paper are: patt-sol
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The categories of this paper are: cmp-lg