Title

Time transformations in post-Newtonian Lagrangians

Document Type

Article

Publication Date

1-1-1984

Abstract

We show that the use of time transformations in post-Newtonian Lagrangians is equivalent to using the lowest-order energy-conservation equation in the highest-order terms of the Lagrangian (complementing Schäfer's observation that the use of coordinate transformations is equivalent to using the lowest-order equations of motion in the highest-order terms of the Lagrangian). We also show how identity coordinate or identity time transformations can add double-zero terms to the Lagrangian. Next we use time and coordinate transformations to simplify the Einstein-Infeld-Hoffmann Lagrangian with parametrized-post-Newtonian parameters and. © 1984 The American Physical Society.

Publication Source (Journal or Book title)

Physical Review D

First Page

2721

Last Page

2725

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