A Dark Energy Model in Lyra Manifold

Abstract

We consider, in normal-gauge Lyra's geometry, evolution of a homogeneous isotropic universe in a gravitational model involving only the standard matter in interaction with a displacement vector field ${\varphi }_{\mu }$. Considering both constant and time-dependent displacement vector field we show that the observed cosmic acceleration could be explained without considering an alien energy component with a negative pressure.

15 pages, 2 figures, LaTeX file

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• A Higher Dimensional Cosmological Model for the Search of Dark Energy Source
• Exact Cosmological Models with the Yang - Mills Fields on Lyra Manifold