A Principle to Determine the Number (3 + 1) of Large Spacetime Dimensions

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dc.creatorRama, S. Kalyana
dc.date2006-10-06
dc.date2006-10-18
dc.date.accessioned2026-07-07T11:27:53Z
dc.date.available2026-07-07T11:27:53Z
dc.descriptionWe assume that our universe originated from highly excited and interacting strings with coupling constant g_s = {\cal O} (1). Fluctuations of spacetime geometry are large in such strings and the physics dictating the emergence of a final spacetime configuration is not known. We propose that, nevertheless, it is determined by an entropic principle that the final spacetime configuration must have maximum entropy for a given amount of energy. This principle implies, under some assumptions, that the spacetime configuration that emerges finally is a (3 + 1) -- dimensional FRW universe filled with w = 1 perfect fluid and with 6 -- dimensional compact space of size l_s; in particular, the number of large spacetime dimensions is d = 3 + 1. Such an universe may evolve subsequently into our universe, perhaps as in Banks -- Fischler scenario.
dc.description11 pages. Latex file. Version 2: References added
dc.identifierhttps://arxiv.org/abs/hep-th/0610071
dc.identifierhttp://arxiv.org/abs/hep-th/0610071
dc.identifierPhys.Lett.B645:365-368,2007
dc.identifierdoi:10.1016/j.physletb.2006.11.077
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/196274
dc.subjectHigh Energy Physics - Theory
dc.subjectStatistical Mechanics
dc.subjectGeneral Relativity and Quantum Cosmology
dc.titleA Principle to Determine the Number (3 + 1) of Large Spacetime Dimensions
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