Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
1996-09-09
Helv.Phys.Acta 69:190-193,1996
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
latex file. Amstex package used. Contribution to the proceedings of journees relativistes 96
Scientific paper
We discuss the coupled Einstein-Klein-Gordon equations for a complex scalar field with and without a quartic self-interaction in a zero curvature Friedman-Lema\^{\i}tre Universe. The complex scalar field, as well as the metric, is decomposed in a homogeneous, isotropic part (the background) and in first order gauge invariant scalar perturbation terms. The background equations can be written as a set of four coupled first order non-linear differential equations. These equations are analyzed using modern theory of dynamical system. It is shown that, in all singular points where inflation occurs, the phase of the complex scalar field is asymptotically constant. The analysis of the first order equations is done for the inflationary phase. For the short wavelength regime the first order perturbation term of the complex scalar field is smeared out and the Bardeen potential oscillates around a nearly constant mean value. Whereas for the long wavelength regime the first order perturbed quantities increase.
No associations
LandOfFree
Inflation with a Complex Scalar Field does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Inflation with a Complex Scalar Field, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Inflation with a Complex Scalar Field will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-335739