Asymptotic behavior of FRW cosmologies with many scalar fields

Details Asymptotic behavior of FRW cosmologies with many scalar fields Asymptotic behavior of FRW cosmologies with many scalar fields

Jan 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002phrvd..65b3509c&link_type=abstract

Physical Review D, vol. 65, Issue 2, id. 023509

Physics

6

Particle-Theory And Field-Theory Models Of The Early Universe

Scientific paper

The dynamical evolution of FRW cosmologies conformally coupled to a finite set of scalar fields is studied. The scalar fields interact between them and we also consider a self-interaction term. lt is proved that when k=-1 and k=0 only one physical asymptotic behavior is possible: the radius of the universe expands forever. When k=1 either we have the just described behavior or the universe will ultimately collapse in a finite time. But we also give evidence that an oscillatory chaotic behavior is possible in this case if a fine-tuning between the initial conditions is satisfied.

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