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Thin shells joining local cosmic string geometries
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DOI：10.1140/epjc/s10052-016-4401-5.png)
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摘要
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In this article we present a theoretical construction of spacetimes with a thin shell that joins two different local cosmic string geometries. We study two types of global manifolds, one representing spacetimes with a thin shell surrounding a cosmic string or an empty region with Minkowski metric, and the other corresponding to wormholes which are not symmetric across the throat located at the shell. We analyze the stability of the static configurations under perturbations preserving the cylindrical symmetry. For both types of geometries we find that the static configurations can be stable for suitable values of the parameters.
Keyword:
LARGE-SCALE STRUCTURE
GRAVITATIONAL-FIELD
VACUUM STRINGS
TIME MACHINES
WORMHOLES
UNIVERSE
GRAVITY
TENSOR
MATTER
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期刊
IF:
4.8
论文数:
1.8W
被引数:
4.7W
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