CHAOTIC FRIEDMANN-ROBERTSON-WALKER COSMOLOGY

被引:68
作者
CALZETTA, E [1 ]
ELHASI, C [1 ]
机构
[1] UNIV BUENOS AIRES, FAC CIENCIAS EXACTAS & NAT, DEPT FIS, RA-1428 BUENOS AIRES, ARGENTINA
关键词
D O I
10.1088/0264-9381/10/9/022
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We show that the dynamics of a spatially closed Friedmann-Robertson-Walker universe conformally coupled to a real, free, massive scalar field, is chaotic, for large enough field amplitudes. We do so by proving that this system is integrable under the adiabatic approximation, but that the corresponding KAM tori break up when non-adiabatic terms are considered. This finding is confirmed by numerical evaluation of the Lyapunov exponents associated with the system, among other criteria. Chaos sets strong limitations on our ability to predict the value of the field at the big crunch, from its given value at the big bang.
引用
收藏
页码:1825 / 1841
页数:17
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