EVIDENCE OF CHAOTIC BEHAVIOR IN JORDAN-BRANS-DICKE COSMOLOGY

Citation
R. Carreterogonzalez et al., EVIDENCE OF CHAOTIC BEHAVIOR IN JORDAN-BRANS-DICKE COSMOLOGY, Physics letters. A, 188(1), 1994, pp. 48-54
Citations number
29
Categorie Soggetti
Physics
Journal title
ISSN journal
03759601
Volume
188
Issue
1
Year of publication
1994
Pages
48 - 54
Database
ISI
SICI code
0375-9601(1994)188:1<48:EOCBIJ>2.0.ZU;2-G
Abstract
We study numerically the properties of solutions of spatially homogene ous Bianchi-type IX cosmological models in the Jordan-Brans-Dicke theo ry of gravitation. Solutions are obtained in which the scale factors u ndergo irregular oscillations. The estimate of the maximum Lyapunov ex ponent is found to be positive in the cases studied. These results see m to be the first pieces of evidence in the literature of chaotic beha viour in Jordan-Brans-Dicke cosmology. The range of values of the Jord an-Brans-Dicke coupling parameter considered is (-500, -1).