Comments on scattering in massive gravity, vDVZ and BCFW
Nathan Moynihan, Jeff Murugan
TL;DR
This paper uses modern scattering amplitude techniques to analyze the vDVZ discontinuity in massive gravity, providing new insights into its origin through BCFW relations.
Contribution
It offers a novel interpretation of the vDVZ discontinuity using BCFW relations, connecting amplitude methods with classical gravity issues.
Findings
Reinterpreted vDVZ discontinuity via BCFW relations
Applied advanced amplitude techniques to massive gravity
Provided new perspective on massless limit in gravity
Abstract
Armed with the latest technology in the computation of scattering amplitudes involving massive particles of any spin, we revisit the van Dam-Veltman-Zakharov (vDVZ) discontinuity of massive gravity and show how it may be understood in terms of the Britto-Cachazo-Feng-Witten (BCFW) relations.
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