Non-perturbative Double Copy in Flatland

Abstract

We derive a non-perturbative, Lagrangian-level formulation of the double copy in two spacetime dimensions. Our results elucidate the field theoretic underpinnings of the double copy in a broad class of scalar theories which can include masses and higher-dimension operators. An immediate corollary is the amplitudes-level double copy at all orders in perturbation theory. Applied to certain integrable models, the double copy defines an isomorphism between Lax connections, Wilson lines, and infinite towers of conserved currents. We also implement the double copy at the level of non-perturbative classical solutions, both analytically and numerically, and present a generalization of the double copy map that includes a fixed tower of higher-dimension corrections given by the Moyal algebra.

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Cited by in corpus (6)

• Non-perturbative aspects of the self-dual double copy
• A spinorial double copy for $\mathcal{N}=0$ supergravity
• Soft Phonon Theorems
• FiniteFieldSolve: Exactly Solving Large Linear Systems in High-Energy Theory
• Hawking radiation from the double copy
• Celestial Quantum Error Correction II: From Qudits to Celestial CFT