Evidence of chaotic behaviour in Jordan-Brans-Dicke cosmology

Details Evidence of chaotic behaviour in Jordan-Brans-Dicke cosmology Evidence of chaotic behaviour in Jordan-Brans-Dicke cosmology

May 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994phla..188...48c&link_type=abstract

Physics Letters A, Volume 188, Issue 1, p. 48-54.

Physics

7

Scientific paper

We study numerically the properties of solutions of spatially homogeneous Bianchi-type IX cosmological models in the Jordan- Brans-Dicke theory of gravitation. Solutions are obtained in which the scale factors undergo irregular oscillations. The estimate of the maximum Lyapunov exponent is found to be positive in the cases studied. These results seem to be the first pieces of evidence in the literature of chaotic behaviour in Jordan-Brans-Dicke cosmology. The range of values of the Jordan-Brans- Dicke coupling parameter considered is (-500,-1).

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