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hep-th2026
Dyeing form factors as amplitudes
Xinyue Li, Gang Yang, Guorui Zhu
The double copy of form factors has revealed a striking feature: poles that are spurious from the gauge-theory perspective become physical propagators in gravity. At the same time,…
hep-th2026
Double copy of form factors with multiple operator insertions
Xinyue Li, Gang Yang, Guorui Zhu
Extending the double copy of scattering amplitudes to more general physical quantities involving local gauge-invariant operators is a central open question. While progress has been…