Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Nullification in scalar theories with derivative couplings   We discuss the structure of scalar field theories having the property that
all on-shell S-matrix elements vanish in tree approximation. It is shown that
there exists a large class of such theories, with derivative couplings, which
are all locally related to a free theory by a nonlinear transformation. It is
also shown that a field-dependent wave-function renormalization provides all
necessary counterterms so that all on-shell S-matrix elements vanish also at
the one-loop level.

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The categories of this paper are: funct-an
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The categories of this paper are: cs
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The categories of this paper are: nlin
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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: math-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: cond-mat
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The categories of this paper are: supr-con
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The categories of this paper are: quant-ph
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The categories of this paper are: q-fin
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The categories of this paper are: astro-ph
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The categories of this paper are: q-bio
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The categories of this paper are: cmp-lg
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The categories of this paper are: acc-phys
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The categories of this paper are: adap-org