8 problems

Bern–Carrasco–Johansson colour–kinematics duality conjecture. There exists a choice of kinematic numerators for the trivalent diagrams entering $\scA_{n,L}$ such that whenever a tr…

The discussion concerns four-dimensional BF theory, which admits two distinct kinematic algebras leading to corresponding double-copy theories. These constructions can appear diffe…

The Weyl curvature of a four-dimensional spacetime can be represented by the Weyl spinor $\Psi_{\alpha\beta\gamma\delta}$, and its Maxwell curvature by the Maxwell spinor…

RSV–KLT diagonalization conjecture. The residues on which the RSV formula is supported should diagonalize the KLT kernel, so that the double copy can be implemented on the RSV form…

Consider a Yang–Mills amplitude represented in terms of color factors and kinematic numerators. The kinematic numerators are said to obey color-kinematics duality when they satisfy…

The BCJ double copy relates two copies of $SU(2)$ gauge theories to Einstein gravity, whose spin connection can be decomposed into two $SL(2,\mathbb{C})$ connections. A holomorphic…

The “product” combines the on-shell massless states of two distinct Yang–Mills theories, called the emph{Left} and emph{Right} theories, whose gauge groups are $G$ and $\tilde{G}$.…

BCJ double-copy conjecture. Graviton scattering amplitudes can be obtained from the Yang–Mills amplitudes by a simple squaring procedure once a set of colour-kinematics-dual Yang–M…