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arXiv · 2312.06748

On Amplitudes and Field Redefinitions

Timothy Cohen·Xiaochuan Lu·Dave Sutherland
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Abstract

We derive an off-shell recursion relation for correlators that holds at all loop orders. This allows us to prove how generalized amplitudes transform under generic field redefinitions, starting from an assumed behavior of the one-particle-irreducible effective action. The form of the recursion relation resembles the operation of raising the rank of a tensor by acting with a covariant derivative. This inspires a geometric interpretation, whose features and flaws we investigate.

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Timothy Cohen, Xiaochuan Lu, Dave Sutherland. 2023-12-11. On Amplitudes and Field Redefinitions. https://arxiv.org/abs/2312.06748

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