A calculation-free derivation of GR
Walter Burke Institute for Theoretical Physics, California Institute of Technology, 91125, Pasadena, CA, USA
2 Physics Department, Brandeis University, 02454, Waltham, MA, USA
Accepted: 9 June 2022
Published online: 25 June 2022
I derive GR from the standard observational requirements plus a recent proof that a linear spin 2 field can only propagate on a Ricci-flat (or constant) background, of which it is a perturbation: it is an Einstein field.
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