Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2000-01-11
Phys.Rev. D61 (2000) 124002
Physics
High Energy Physics
High Energy Physics - Phenomenology
15 pages, 5 figures
Scientific paper
10.1103/PhysRevD.61.124002
We study parametric amplification of Kaluza-Klein (KK) modes in a higher $D$-dimensional generalized Kaluza-Klein theory, which was originally considered by Mukohyama in the narrow resonance case. It was suggested that KK modes can be enhanced by an oscillation of a scale of compactification by the $d$-dimensional sphere $S^d~(d=D-4)$ and by the direct product $S^{d_1}\times S^{d_2}~(d_1+d_2=D-4)$. We extend this past work to the more general case where initial values of the scale of compactification and the quantum number of the angular momentum $l$ of KK modes are not small. We perform analytic approaches based on the Mathieu equation as well as numerical calculations, and find that the expansion of the universe rapidly makes the KK field deviate from instability bands. As a result, KK modes are not enhanced sufficiently in an expanding universe in these two classes of models.
No associations
LandOfFree
Are Kaluza-Klein modes enhanced by parametric resonance? 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 Are Kaluza-Klein modes enhanced by parametric resonance?, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Are Kaluza-Klein modes enhanced by parametric resonance? will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-364763