A symmetry of the spatially flat Friedmann equations with barotropic fluid

Details A symmetry of the spatially flat Friedmann equations with barotropic fluid A symmetry of the spatially flat Friedmann equations with barotropic fluid

2011-08-10

arxiv.org/abs/1108.2102v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

10 pages, no figures, to appear in Phys. Lett. B

Scientific paper

A string-inspired duality symmetry of the spatially flat Friedmann equations
of general-relativistic cosmology is discussed and generalized, providing a map
between exact solutions corresponding to different values of the barotropic
index.

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