We discuss an exotic class of Kaluza-Klein models in which the internal space is neither
compact nor even of finite volume. Rather than using the usual compact internal space we …

In this study we present evolving wormhole configurations in third-order Lovelock gravity
and investigate the possibility that these solutions satisfy the energy conditions. Using a …

Multidimensional gravitational models containing certain combinations of scalar fields,
antisymmetric forms and multicomponent perfect fluid are considered. The manifold has the …

In the present work, we investigate evolving wormhole configurations in higher-dimensions,
by adding a Gauss–Bonnet term to the standard Einstein–Hilbert action. Using a …

By considering five-dimensional cosmological models with a bulk filled with a pressureless
scalar field or equivalently dust matter, and a negative cosmological constant, we have …

It was one of the greatest acivements of the first decades of the last century to find a
mathematical description of gravitational appearances that explains several observations in …

We discuss possible observational manifestations of static, spherically symmetric solutions
of a class of multidimensional theories of gravity, which includes the low energy limits of …

5-dimensional homogeneous and isotropic models with a bulk cosmological constant and a
minimally coupled scalar field are considered. We have found that in special cases the …

Rubakov and Shaposhnikov (RSH), in a seminal paper, discussed the possibility that
particles are confined in a potential well. This is considered as the first mention to the …

We consider a multidimensional universe with the topology $ M=\R\times
M_1\times\cdots\times M_n $, where the $ M_i $($ i> 1$) are $ d_i $-dimensional Ricci flat …