arXiv:hep-ph/0409316·v2·High Energy Physics — Phenomenology
Angular momentum content of a virtual graviton
Duane Dicus (U. of Texas at Austin)🇺🇸 · Scott Willenbrock (U. of Illinois at Urbana-Champaign)🇺🇸
Abstract
We show that a virtual graviton has a J=0 component, which serves to cancel the J=2, J_z=0 component when the graviton is on shell. In contrast, a massive graviton has no J=0 component either on or off shell. This difference is responsible for the van Dam-Veltman-Zakharov discontinuity.
Comments: 5 pages. Reference added