Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Discrete theta and the 5d superconformal index   5d Yang-Mills theory with an Sp(N) gauge group admits a discrete analog of
the theta parameter. We describe the origin of this parameter in N=1 theories
from Type I' string theory, and study its effect on the 5d superconformal fixed
point theories with an Sp(1)=SU(2) gauge group by computing the superconformal
index. Our result confirms the lack of global symmetry enhancement in the
so-called \tilde{E}_1 theory.

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The categories of this paper are: ao-sci
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The categories of this paper are: adap-org
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The categories of this paper are: nlin
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The categories of this paper are: quant-ph
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The categories of this paper are: gr-qc
0
The categories of this paper are: hep-ph
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The categories of this paper are: cmp-lg
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The categories of this paper are: hep-lat
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The categories of this paper are: nucl-ex
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The categories of this paper are: q-fin
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The categories of this paper are: eess
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The categories of this paper are: chem-ph
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The categories of this paper are: q-alg
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The categories of this paper are: q-bio
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The categories of this paper are: math-ph
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The categories of this paper are: comp-gas