Dark Energy as a Signature of Extra Dimensions

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dc.creatorLi, Baojiu
dc.creatorChu, Ming-Chung
dc.creatorCheung, Kai-Chung
dc.creatorTang, Alfred
dc.date2005-01-18
dc.date2005-01-19
dc.date.accessioned2026-07-07T07:54:35Z
dc.date.available2026-07-07T07:54:35Z
dc.descriptionOne of the most important and surprising discoveries in cosmology in recent years is the realization that our Universe is dominated by a mysterious dark energy, which leads to an accelerating expansion of space-time. A simple generalization of the standard Friedmann-Robertson-Walker equations based on General Relativity and the Cosmological Principles with the inclusion of a number of closed extra dimensions reproduces the currently observed data on dark energy, without the introduction of any cosmological constant or new particles. In particular, with a few extra dimensions, we obtain the redshift dependence of the deceleration parameter, the dark energy equation of state, as well as the age of the Universe in agreement with data, with essentially no free parameter. This model predicts that the extra dimensions have been compactified throughout the cosmic history, and it therefore suggests that signals from early Universe may give promising signatures of extra dimensions.
dc.description12 pages, 5 figures
dc.identifierhttps://arxiv.org/abs/astro-ph/0501367
dc.identifierhttp://arxiv.org/abs/astro-ph/0501367
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/126665
dc.subjectAstrophysics
dc.titleDark Energy as a Signature of Extra Dimensions
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