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Initial data for the relativistic gravitational N-body problem

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Piotr T Chruściel1, Justin Corvino2 and James Isenberg3

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In general relativity, an initial data set for an isolated gravitational system takes the form of a solution of the Einstein constraint equations which is asymptotically Euclidean on a specified end. Given a collection of N such data sets with a subregion of interest (bounded away from the specified end) chosen in each, we show that there exists a family of new initial data sets, each of which contains exact copies of each of the N chosen subregions, positioned in a chosen array in a single asymptotic end. These composite initial data sets model isolated, relativistic gravitational systems containing N chosen bodies in specified initial configurations.


PACS

04.20.Ha Asymptotic structure

04.20.Ex Initial value problem, existence and uniqueness of solutions

MSC

83C05 Einstein's equations (general structure, canonical formalism, Cauchy problems)

83C30 Asymptotic procedures (radiation, news functions, H-spaces, etc.)

Subjects

Gravitation and cosmology

Dates

Issue 22 (21 November 2010)

Received 18 September 2010

Published 26 October 2010



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