Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On stable higher spin states in Heterotic String Theories   We study properties of 1/2 BPS Higher Spin states in heterotic
compactifications with extended supersymmetry. We also analyze non BPS Higher
Spin states and give explicit expressions for physical vertex operators of the
first two massive levels. We then study on-shell tri-linear couplings of these
Higher Spin states and confirm that BPS states with arbitrary spin cannot decay
into lower spin states in perturbation theory. Finally, we consider scattering
of vector bosons off higher spin BPS states and extract form factors and
polarization effects in various limits.

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The categories of this paper are: cond-mat
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The categories of this paper are: supr-con
9
The categories of this paper are: nlin
34
The categories of this paper are: chem-ph
23
The categories of this paper are: solv-int
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The categories of this paper are: math-ph
16
The categories of this paper are: stat
12
The categories of this paper are: nucl-th
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The categories of this paper are: hep-ph
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The categories of this paper are: hep-lat
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The categories of this paper are: nucl-ex
13
The categories of this paper are: quant-ph
35
The categories of this paper are: mtrl-th
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The categories of this paper are: hep-ex
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The categories of this paper are: chao-dyn
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The categories of this paper are: math