Brane worlds and dark matter

Abstract

Two problems related to dark matter is considered in the context of a brane world model in which the confinement of gauge fields on the brane is achieved by invoking a confining potential. First, we show that the virial mass discrepancy can be addressed if the conserved geometrical term appearing in this model is considered as an energy momentum tensor of an unknown type of matter, the so-called X-matter whose equation of state is also obtained. Second, the galaxy rotation curves are explained by assuming an anisotropic energy momentum tensor for the X-matter.

13 pages, 1 figure, to appear in IJMPD

References in corpus (5)

• The virial theorem and the dynamics of clusters of galaxies in the brane world models
• Anisotropic brane gravity with a confining potential
• Brane-World Black Hole Solutions via a Confining Potential
• Accelerating universe in brane gravity with a confining potential
• Virial mass in DGP brane cosmology

Cited by in corpus (6)

• Brane-$f(R)$ gravity and dark matter
• On the gravitational collapse in 4-dimensional Einstein-Gauss-Bonnet gravity
• Galactic rotation curves of spiral galaxies and dark matter in f(R,T) gravity theory
• Probing Lambda-DGP Braneworld Model
• Galactic dynamics in the presence of scalaron: A perspective from $\mathbf{f}(\mathbf{R})$ gravity
• Surface gravity in spherically symmetric collapsing stars