Chameleon fields may modify gravity on cluster scales while recovering general relativity
locally. This article reviews signatures of chameleon modifications in the nonlinear …

In order to explain cosmic acceleration without invoking``dark''physics, we consider f (R)
modified gravity models, which replace the standard Einstein-Hilbert action in General …

We analyse modelling techniques for the large-scale structure formed in scalar-tensor
theories of constant Brans-Dicke parameter which match the concordance model …

We use the optimized skew-spectrum as well as the skew-spectra associated with the
Minkowski functionals to test the possibility of using the cross-correlation of the integrated …

In this work we study the simultaneous effect of primordial non-Gaussianity and the
modification of the gravity in f (R) framework on large scale structure observations. We show …

In the past two decades the so-called ΛCDM model of cosmological structure formation has
been spectacularly confirmed by a large amount of experimental data. In particular, the …

In order to explain cosmic acceleration without invoking “dark” physics, we consider f (R)
modified gravity models, which replace the standard Einstein-Hilbert action in General …

Our aim is to understand how cosmological observables are modified by different values of
the “free” parameters in the equations of state for dark sector perturbations we constructed in …