Junction Conditions of Friedmann-Robertson-Walker Space-Times

Details Junction Conditions of Friedmann-Robertson-Walker Space-Times Junction Conditions of Friedmann-Robertson-Walker Space-Times

1993-11-15

arxiv.org/abs/gr-qc/9311024v2

Phys.Rev.D50:5425-5428,1994

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

7 pages, LaTeX, figures are not included (available on request by regular mail), WU-AP/31/93

Scientific paper

10.1103/PhysRevD.50.5425

We complete a classification of junctions of two Friedmann-Robertson-Walker space-times bounded by a spherical thin wall. Our analysis covers super-horizon bubbles and thus complements the previous work of Berezin, Kuzumin and Tkachev. Contrary to sub-horizon bubbles, various topology types for super-horizon bubbles are possible, regardless of the sign of the extrinsic curvature. We also derive a formula for the peculiar velocity of a domain wall for all types of junction.

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