Avoiding closed timelike curves with a collapsing rotating null dust shell

Details Avoiding closed timelike curves with a collapsing rotating null dust shell Avoiding closed timelike curves with a collapsing rotating null dust shell

2007-10-25

arxiv.org/abs/0710.4696v3

Class.Quant.Grav.25:045016,2008

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

6 pages; v2: references added; v3: remark added for final published version

Scientific paper

10.1088/0264-9381/25/4/045016

We present an idealised model of gravitational collapse, describing a
collapsing rotating cylindrical shell of null dust in flat space, with the
metric of a spinning cosmic string as the exterior. We find that the shell
bounces before closed timelike curves can be formed. Our results also suggest
slightly different definitions for the mass and angular momentum of the string.

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