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Newtonian Atlas for Dust-Filled FRW Universe

The metric of an FRW universe filled with pressureless dust is shown to agree, close to any spacetime point, with a curved Newtonian-type metric where Einstein's equations simplify to those of Newtonian gravity. The agreement is shown to quadratic order in the local coordinates, so the curvatures agree. This result is established by expressing both metrics in Riemann normal form. This approach gives a local Newtonian understanding of cosmology that avoids the paradoxes of global Newtonian cosmology.

preprint2013arXivOpen access
Nicholas S. Manton
gr-qc
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Nicholas S. Manton

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