Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Composite operators in $T\bar T$-deformed free QFTs   We study perturbative renormalization of the composite operators in the
$T\bar T$-deformed two-dimensional free field theories. The pattern of
renormalization for the stress-energy tensor is different in the massive and
massless cases. While in the latter case the canonical stress tensor is not
renormalized up to high order in the perturbative expansion, in the massive
theory there are induced counterterms at linear order. For a massless theory
our results match the general formula derived recently in [1].

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The categories of this paper are: math
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The categories of this paper are: cs
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The categories of this paper are: nlin
34
The categories of this paper are: chem-ph
36
The categories of this paper are: cmp-lg
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The categories of this paper are: adap-org
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The categories of this paper are: mtrl-th
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The categories of this paper are: physics
20
The categories of this paper are: acc-phys
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The categories of this paper are: math-ph
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The categories of this paper are: hep-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: hep-lat
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The categories of this paper are: alg-geom
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The categories of this paper are: hep-ex
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The categories of this paper are: funct-an