Abstract
For some time I have been interested in treating the gravitational field at spatial infinity (“spi”), as an exercise that might yield clues to the physics of gravitation in space-time. Strange as it may appear at first sight, though the field on spi represents nothing but the r-1 correction to the Minkowski metric of an asymptotically flat space-time, it has its own dynamics and causality quite independent of the degrees of freedom in space-time. More precisely, appropriate Cauchy data on a sub-manifold of spi determine the field on spi in its entirety, uniquely up to a well-defined freedom of gauge.
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References
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© 1986 Springer Science+Business Media New York
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Bergmann, P.G. (1986). Gravitation at Spatial Infinity. In: Bergmann, P.G., De Sabbata, V. (eds) Topological Properties and Global Structure of Space-Time. NATO ASI Series. Springer, Boston, MA. https://doi.org/10.1007/978-1-4899-3626-4_2
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DOI: https://doi.org/10.1007/978-1-4899-3626-4_2
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