Flavour-kinematics duality for Goldstone modes

A bstract Three scalar effective field theories have special properties in terms of non-linear symmetries, soft limits and on-shell constructability that arise from their Goldstone nature: the σ -model, multi-DBI theory Galileon. We discuss how these are related via flavour-kinematics duality, analogous to colour-kinematics duality between gravity gauge theories. At off-shell level, we identify a specific mapping three is crucially dependent on symmetries. Similarly, demonstrate amplitudes factorise into BCJ numerators describing flavour version kinematics, naturally leading inclusion graviton exchange SO( M, N ) -model. Finally, map those onto each other, comment similar relation tensor kinematics. Our results highlight common structure underlies physics different modes.