Observational Evidence for Extra Dimensions from Dark Matter

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dc.creatorQin, Bo
dc.creatorPen, Ue-Li
dc.creatorSilk, Joseph
dc.date2005-08-26
dc.date.accessioned2026-07-07T02:18:31Z
dc.date.available2026-07-07T02:18:31Z
dc.descriptionRecent astronomical observations of systems of dark matter, which have been cited as providing possible support for self-interacting cold dark matter, may provide evidence for the extra dimensions predicted by superstring scenarios. We find that the properties of the required dark matter self-interaction are precisely the consequences of a world with 3 large extra dimensions of size \~1nm, where gravity follows the r^{-5} law at scales below ~1nm. From the cross sections measured for various dark matter systems, we also constrain the mass of dark matter particles to be m_x ~ 3*10^{-16} proton mass, consistent with the mass of axions.
dc.description4 pages, no figure, submitted to PRL
dc.identifierhttps://arxiv.org/abs/astro-ph/0508572
dc.identifierhttp://arxiv.org/abs/astro-ph/0508572
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/9517
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Phenomenology
dc.titleObservational Evidence for Extra Dimensions from Dark Matter
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