Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Haag's theorem in renormalised quantum field theories   We review a package of no-go results in axiomatic quantum field theory with
Haag's theorem at its centre. Since the concept of operator-valued
distributions in this framework comes very close to what we believe canonical
quantum fields are about, these results are of consequence to quantum field
theory: they suggest the seeming absurdity that this highly victorious theory
is incapable of describing interactions. We single out unitarity of the
interaction picture's intertwiner as the most salient provision of Haag's
theorem and critique canonical perturbation theory to argue that
renormalisation bypasses Haag's theorem by violating this very assumption.

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The categories of this paper are: dg-ga
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The categories of this paper are: hep-ph
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The categories of this paper are: acc-phys
1
The categories of this paper are: cs
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The categories of this paper are: q-bio
33
The categories of this paper are: plasm-ph
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The categories of this paper are: econ
5
The categories of this paper are: gr-qc
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The categories of this paper are: nucl-ex
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The categories of this paper are: physics
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The categories of this paper are: astro-ph
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The categories of this paper are: solv-int
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The categories of this paper are: nucl-th
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The categories of this paper are: comp-gas
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The categories of this paper are: chao-dyn
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The categories of this paper are: atom-ph