Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Exceptional field theories, superparticles in an enlarged 11D superspace
  and higher spin theories   Recently proposed exceptional field theories (EFTs) making manifest the
duality $E_{n(n)}$ symmetry, first observed as nonlinearly realized symmetries
of the maximal $d=3,4,...,9$ supergravity ($n=11-d$) and containing 11D and
type IIB supergravity as sectors, were formulated in enlarged spacetimes. In
the case of $E_{7(7)}$ EFT such an enlarged spacetime can be identified with
the bosonic body of the $d=4$ central charge superspace $\Sigma^{(60|32)}$, the
${\cal N}=8$ $d=4$ superspace completed by 56 additional bosonic coordinates
associated to central charges of the maximal $d=4$ supersymmetry algebra.
  In this paper we show how the hypothesis on the relation of all the known
$E_{n(n)}$ EFTs, including $n=8$, with supersymmetry leads to the conjecture on
existence of 11D exceptional field theory living in 11D tensorial central
charge superspace $\Sigma^{(528|32)}$ and underlying all the $E_{n(n)}$ EFTs
with $n=2,...,8$, and probably the double field theory (DFT). We conjecture the
possible form of the section conditions of such an 11D EFT and show that quite
generic solutions of these can be generated by superparticle models the ground
states of which preserve from one half to all but one supersymmetry. The
properties of these superparticle models are briefly discussed. We argue that,
upon quantization, their quantum states should describe free massless
non-conformal higher spin fields in D=11.
  We also discuss some relevant representations of the M-theory superalgebra
which, in the present context, describes supersymmetry of the 11D EFT.

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The categories of this paper are: astro-ph
36
The categories of this paper are: cmp-lg
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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: gr-qc
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The categories of this paper are: math
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The categories of this paper are: comp-gas
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The categories of this paper are: cs
3
The categories of this paper are: physics
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The categories of this paper are: hep-ex
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The categories of this paper are: stat
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The categories of this paper are: eess
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The categories of this paper are: bayes-an
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The categories of this paper are: hep-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: supr-con