Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On Consistent Kinetic and Derivative Interactions for Gravitons   The only known fully ghost-free and consistent Lorentz-invariant kinetic term
for a graviton (or indeed for any spin-2 field) is the Einstein-Hilbert term.
Here we propose and investigate a new family of candidate kinetic interactions
and their extensions to derivative interactions involving several spin-2
fields. These new terms generically break diffeomorphism invariance(s) and as a
result can lead to the propagation of 5 degrees of freedom for a single spin-2
field - analogous to ghost-free Massive Gravity. We discuss under what
circumstances these new terms can be used to build healthy effective field
theories and in the process establish the `Jordan' and `Einstein' frame
pictures for Massive-, Bi- and Multi-Gravity.

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The categories of this paper are: chem-ph
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The categories of this paper are: stat
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The categories of this paper are: atom-ph
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The categories of this paper are: alg-geom
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The categories of this paper are: cond-mat
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The categories of this paper are: hep-ex
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The categories of this paper are: q-bio
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The categories of this paper are: ao-sci
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The categories of this paper are: econ
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The categories of this paper are: funct-an
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The categories of this paper are: mtrl-th
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The categories of this paper are: nucl-th
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The categories of this paper are: chao-dyn
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The categories of this paper are: plasm-ph
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The categories of this paper are: cmp-lg
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The categories of this paper are: q-fin