Symmetry for Flavor-Kinematics Duality from an Action.

  title={Symmetry for Flavor-Kinematics Duality from an Action.},
  author={C. T. Cheung and Chia-Hsien Shen},
  journal={Physical review letters},
  volume={118 12},
We propose a new representation of the nonlinear sigma model that exhibits a manifest duality between flavor and kinematics. The fields couple exclusively through cubic Feynman vertices which define the structure constants of an underlying kinematic algebra. The action is invariant under a combination of internal and spacetime symmetries whose conservation equations imply flavor-kinematics duality, ensuring that all Feynman diagrams satisfy kinematic Jacobi identities. Substituting flavor for… CONTINUE READING

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