Gravitational waves in a stringlike fluid cosmology

Details Gravitational waves in a stringlike fluid cosmology Gravitational waves in a stringlike fluid cosmology

1998-06-03

arxiv.org/abs/gr-qc/9806016v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

Latex, 8 pages

Scientific paper

10.1046/j.1365-8711.1999.02554.x

The coupling of a stringlike fluid with ordinary matter and gravity may lead to a closed Universe with the dynamic of an open one. This can provide an alternative solution for the age and horizon problems. A study of density perturbations of the stringlike fluid indicates the existence of instabilities in the small wavelength limit when it is employed a hydrodynamic approach. Here, we extend this study to gravitational waves, where the hydrodynamical approach plays a less important role, and we argue that traces of the existence of this fluid must be present in the anisotropies of the cosmic background radiation.

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