Initial data for fluid bodies in general relativity

Details Initial data for fluid bodies in general relativity Initial data for fluid bodies in general relativity

2002-01-29

arxiv.org/abs/gr-qc/0201091v1

Phys.Rev.D65:084020,2002

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

38 pages, LaTeX 2e, no figures. Accepted for publication in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.65.084020

We show that there exist asymptotically flat almost-smooth initial data for Einstein-perfect fluid's equation that represent an isolated liquid-type body. By liquid-type body we mean that the fluid energy density has compact support and takes a strictly positive constant value at its boundary. By almost-smooth we mean that all initial data fields are smooth everywhere on the initial hypersurface except at the body boundary, where tangential derivatives of any order are continuous at that boundary. PACS: 04.20.Ex, 04.40.Nr, 02.30.Jr

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