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arXiv · 2509.11799

A Note on the Feynman Lectures on Gravitation

Satoshi Nakajima
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Abstract

Following Feynman's lectures on gravitation, we consider the theory of the gravitational (massless spin-2) field in flat spacetime and present the third- and fourth-order Lagrangian densities for the gravitational field. In particular, we present detailed calculations for the third-order Lagrangian density. We point out that the expression for the third-order Lagrangian density which Feynman provided is not a solution of Feynman's condition that the third-order Lagrangian density must satisfy. However, Feynman's third-order Lagrangian density gives the correct perihelion shift.

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Satoshi Nakajima. 2025-09-15. A Note on the Feynman Lectures on Gravitation. https://doi.org/10.1088/1402-4896%2Fae4149

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