Abstract
Certain classical field theories admit a formal multi-particle solution, known as the perturbiner expansion, that serves as a generating function for all the tree-level scattering amplitudes and the Berends-Giele recursion relations they satisfy. In this paper it is argued that the minimal model for the L∞-algebra that governs a classical field theory contains enough information to determine the perturbiner expansion associated to such theory. This gives a prescription for computing the tree-level scattering amplitudes by inserting the perturbiner solution into the homotopy Maurer-Cartan action for the L∞-algebra. We confirm the method in the non-trivial examples of bi-adjoint scalar and Yang-Mills theories.
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ArXiv ePrint: 1907.12154
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Lopez-Arcos, C., Vélez, A.Q. L∞-algebras and the perturbiner expansion. J. High Energ. Phys. 2019, 10 (2019). https://doi.org/10.1007/JHEP11(2019)010
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DOI: https://doi.org/10.1007/JHEP11(2019)010