Black hole lattices under the microscope

It is known how to choose initial data for Einstein's equations describing an arbitrary number of black holes at a moment of time symmetry. This idea has been used to give insight into the cosmological averaging problem. We study the local curvature of the initial data space, for configurations...

Full description

Saved in:
Bibliographic Details
Published in:Classical and quantum gravity 2018-07, Vol.35 (14), p.145004
Main Authors: Bengtsson, Ingemar, Galstyan, Irina
Format: Article
Language:English
Subjects:
cosmology
exact solutions
initial data
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:It is known how to choose initial data for Einstein's equations describing an arbitrary number of black holes at a moment of time symmetry. This idea has been used to give insight into the cosmological averaging problem. We study the local curvature of the initial data space, for configurations of 8, 120, or 600 black holes obtained by choosing points either regularly or randomly on a 3-sphere. We conclude that the asymptotic regions are remarkably close to that of Schwarzschild, while the region in between shows interesting behaviour. The cosmological back reaction as defined in the recent literature is actually a bit smaller for the random configurations.
ISSN:0264-9381
1361-6382
1361-6382
DOI:10.1088/1361-6382/aac7e0