The Exact Evolution Equation of the Curvature Perturbation for Closed Universe

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dc.creatorZhang, De-Hai
dc.creatorSun, Cheng-Yi
dc.date2003-10-06
dc.date.accessioned2026-07-07T10:47:42Z
dc.date.available2026-07-07T10:47:42Z
dc.descriptionAs is well known, the exact evolution equation of the curvature perturbation plays a very important role in investigation of the inflation power spectrum of the flat universe. However, its corresponding exact extension for the non-flat universes has not yet been given out clearly. The interest in the non-flat, specially closed, universes is being aroused recently. The need of this extension is pressing. We start with most elementary physical consideration and obtain finally this exact evolution equation of the curvature perturbation for the non-flat universes, as well as the evolutionary controlling parameter and the exact expression of the variable mass in this equation. We approximately do a primitive and immature analysis on the power spectrum of non-flat universes. This analysis shows that this exact evolution equation of the curvature perturbation for the non-flat universes is very complicated, and we need to do a lot of numerical and analytic work for this new equation in future in order to judge whether the universe is flat or closed by comparison between theories and observations.
dc.description10 pages, no figures, Latex
dc.identifierhttps://arxiv.org/abs/astro-ph/0310127
dc.identifierhttp://arxiv.org/abs/astro-ph/0310127
dc.identifierChin.Phys.Lett.21:1865,2004
dc.identifierdoi:10.1088/0954-3899/30/8/053
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/183626
dc.subjectAstrophysics
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectHigh Energy Physics - Theory
dc.titleThe Exact Evolution Equation of the Curvature Perturbation for Closed Universe
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