Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2010-09-09
Physics
High Energy Physics
High Energy Physics - Theory
17 pages. v5: Added section 4 providing the harmonic gauge fixing term in NRG fields and appendix A with a derivation of the a
Scientific paper
The "Newtonian" or non-relativistic decomposition of Einstein's gravitational
field is useful in the post-Newtonian approximation. We obtain the full
non-quadratic Einstein-Hilbert action in terms of these fields as well as the
harmonic gauge fixing term and find fairly simple expressions. We discuss
alternatives to the harmonic gauge.
Kol Barak
Smolkin Michael
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