Accelerating Universe from Extra Spatial Dimension

Abstract

We present a simple higher dimensional FRW type of model where the acceleration is apparently caused by the presence of the extra dimensions. Assuming an ansatz in the form of the deceleration parameter we get a class of solutions some of which shows the desirable feature of dimensional reduction as well as reasonably good physical properties of matter. Interestingly we do not have to invoke an extraneous scalar field or a cosmological constant to account for this acceleration. One argues that the terms containing the higher dimensional metric coefficients produces an extra negative pressure that apparently drives the inflation of the 4D space with an accelerating phase. It is further found that in line with the physical requirements our model admits of a decelerating phase in the early era along with an accelerating phase at present.Further the models asymptotically mimic a steady state type of universe although it starts from a big type of singularity. Correspondence to Wesson's induced matter theory is also briefly discussed and in line with it it is argued that the terms containing the higher dimensional metric coefficients apparently creates a negative pressure which drives the inflation of the 3-space with an accelerating phase.

09

References in corpus (10)

• Measurements of Omega and Lambda from 42 High-Redshift Supernovae
• Phantom Energy and Cosmic Doomsday
• Quintessence and the Rest of the World
• A measurement by BOOMERANG of multiple peaks in the angular power spectrum of the cosmic microwave background
• Varying Alpha in a More Realistic Universe
• Interaction of a brane with a moving bulk black hole
• Cosmology in scalar tensor theory and asymptotically de-Sitter Universe
• Is the present expansion of the universe really accelerating?
• Stabilization of internal spaces in multidimensional cosmology
• Quintessence Restrictions on Negative Power and Condensate Potentials

Cited by in corpus (5)

• Accelerating Universe as Window for Extra Dimensions
• Spherically symmetric inhomogeneous model with Chaplygin gas
• Accelerating Universe from an Evolving Lambda in Higher Dimension
• Phantom cosmology with a decaying cosmological function $\Lambda (t)$ induced from five-dimensional (5D) geometrical vacuum
• General relativistic plasma in higher dimensional space time