2011
DOI: 10.1088/1475-7516/2011/09/015
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Late-time acceleration in higher dimensional cosmology

Abstract: We investigate late time acceleration of the universe in higher dimensional cosmology. The content in the universe is assumed to exert pressure which is different in the normal and extra dimensions. Cosmologically viable solutions are found to exist for simple forms of the equation of state. The parameters of the model are fixed by comparing the predictions with supernovae data. While observations stipulate that the matter exerts almost vanishing pressure in the normal dimensions, we assume that, in the extra … Show more

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Cited by 13 publications
(68 citation statements)
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“…For the multidimensional model PCS [46] and the model [47] in spacetime with 1 + 3 + d dimensions the following metric is used [46]:…”
Section: Modelsmentioning
confidence: 99%
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“…For the multidimensional model PCS [46] and the model [47] in spacetime with 1 + 3 + d dimensions the following metric is used [46]:…”
Section: Modelsmentioning
confidence: 99%
“…For cosmological solutions in Refs. [46,47] the scale factor a(t) grows while b(t) diminishes, in other words, some form of dynamical compactification [40][41][42][43][44][45][46] takes place, a size of compactified b is small enough to play no essential role at the TeV scale. In Refs.…”
Section: Modelsmentioning
confidence: 99%
See 1 more Smart Citation
“…For example in [20] the idea of anisotropic extra dimensions is used to solve the horizon problem. Furthermore, the contibution of the cosmological evolution of extra dimensions to the dynamics of the universe is considered in literature to address also the current accelerated expansion of the universe [12,13,18,[21][22][23] and to account for the amount and nature of the dark matter by bringing the Kaluza-Klein tower of the particles [15,19] to the stage. Mathematically all these attempts can work in some way or other because adding new degrees of freedom to the (1+3)-dimensional cosmological settings by considering the evolution of extra dimensions allows one to obtain cosmologically viable scenarios.…”
Section: Discussionmentioning
confidence: 99%
“…After a long interlude, starting at seventies, the revival of interest in extra dimensions started with the formulation of theories which are considered as the candidates for being fundamental theories of matter and interactions, like string theory, which are formulated in more than three space dimensions, and the presence of these extra dimensions in these theories are forced by the mathematical consistency unlike the original proposal of Kaluza-Klein. Another attempt with the use of extra dimensions was the so called brane-world models [4][5][6][7][8] motivated by the string/M-theory to solve particularly the hierarchy problem, based on the existence of the possibility of non-compact extra dimensions. The observation of the accelerated expansion of the universe [9,10] is another subject attracting much attention, and the machinery of the extra dimensions are used in this context also [11][12][13]. The framework of universal extra dimensions is another way of using the extra dimensions in the cosmological setting to account for the amount and nature of dark energy [14,15].…”
Section: Introductionmentioning
confidence: 99%