The nature of the cosmological dark matter (DM) remains elusive. Recent studies have
advocated the possibility that DM could be composed of ultra-light, self-interacting bosons …

We analyze the cosmology of the Randall-Sundrum model and that of compact brane
models in general in the presence of a radius stabilization mechanism. We find that the …

Dynamical systems theory is especially well-suited for determining the possible asymptotic
states (at both early and late times) of cosmological models, particularly when the governing …

We study the expansion history of the universe up to a redshift of z= 1.75 using the 194
recently published SnIa data by Tonry et al. and Barris et al. In particular we find the best fit …

Various extensions of the standard model of particle physics predict the existence of very
light bosons, with masses ranging from about 10− 5 eV for the QCD axion down to 10− 33 …

Many interesting models incorporate scalar fields with nonminimal couplings to the
spacetime Ricci curvature scalar. As is well known, if only one scalar field is nonminimally …

This topical review deals with a multidimensional gravitational model containing dilatonic
scalar fields and antisymmetric forms. The manifold is chosen in the form M= M 0× M 1×···× …

We compute the covariant three-point function near horizon-crossing for a system of slowly-
rolling scalar fields during an inflationary epoch, allowing for an arbitrary field-space metric …

If spacetime possesses extra dimensions of size and curvature radii much larger than the
Planck or string scales, the dynamics of these extra dimensions should be governed by …

Scalar field dark matter (SFDM) has become a popular alternative to standard collisionless
cold dark matter (CDM), because of its potential to resolve the small-scale problems that has …