Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A new gauge-invariant double copy for heavy-mass effective theory   We propose a new form of the colour-kinematics/double-copy duality for
heavy-mass effective field theories, which we apply to construct compact
expressions for tree amplitudes with heavy matter particles in Yang-Mills and
in gravity to leading order in the mass. In this set-up, the new BCJ numerators
are fixed uniquely and directly written in terms of field strengths, making
gauge invariance manifest. Furthermore, they are local and automatically
satisfy the Jacobi relations and crossing symmetry. We construct these BCJ
numerators explicitly up to six particles. We also discuss relations of the BCJ
numerators in the heavy-mass effective theory with those in pure Yang-Mills
amplitudes.

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The categories of this paper are: nucl-th
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The categories of this paper are: hep-lat
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The categories of this paper are: hep-ex
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The categories of this paper are: econ
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The categories of this paper are: alg-geom
3
The categories of this paper are: physics
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The categories of this paper are: chem-ph
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The categories of this paper are: math
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The categories of this paper are: q-fin
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The categories of this paper are: atom-ph
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The categories of this paper are: ao-sci
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The categories of this paper are: acc-phys
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The categories of this paper are: chao-dyn
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The categories of this paper are: math-ph
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The categories of this paper are: gr-qc
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The categories of this paper are: nlin