Abstract Models where dark matter and dark energy interact with each other have been
proposed to solve the coincidence problem. We review the motivations underlying the need …

Formation of galaxy clusters corresponds to the collapse of the largest gravitationally bound
overdensities in the initial density field and is accompanied by the most energetic …

Recent cosmological observations have posed a challenge for traditional theories of gravity:
what is the force driving the accelerated expansion of the universe? What if dark energy or …

We comprehensively analyse the cosmology dependence of counts-in-cells statistics. We
focus on the shape of the one-point probability distribution function (PDF) of the matter …

We report the effects of entropic corrections to the Friedmann equations on the growth of
perturbations in the early stages of the universe. We consider two types of corrections to the …

Despite the many efforts, our theoretical understanding of the ultimate nature of the dark
energy component of the universe still lags well behind the astounding experimental …

Modifications of general relativity provide an alternative explanation to dark energy for the
observed acceleration of the Universe. Modified gravity theories have richer observational …

We study the spherical collapse model for several dark-energy scenarios using the fully non-
linear differential equation for the evolution of the density contrast within homogeneous …

Kaniadakis entropy is a one-parameter deformation of the classical Boltzmann–Gibbs–
Shannon entropy, arising from a self-consistent relativistic statistical theory. Assuming a …

The universality of the halo mass function is investigated in the context of dark energy
cosmologies. This widely used approximation assumes that the mass function can be …