Comments on the double copy construction for gravitational theories
G. Cardoso*, G. Inverso, S. Nagy and S. Nampuri
August 22, 2018
August 24, 2018
We revisit the double copy description for
linearized gravity and point out various technical issues and subtleties,
associated with setting up the double copy description, including the problem of matching degrees of freedom on both sides of
the double copy dictionary and the related issue of the constraint between
graviton and dilaton sources. We introduce and discuss possible resolutions of these issues.
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