We use a high-accuracy computational code to investigate the precision with which
cosmological parameters could be reconstructed by future cosmic microwave background …

Quantum fluctuations during inflation may be responsible for temperature anisotropies in the
cosmic microwave background (CMB). Observations of CMB anisotropies can be used to …

A class of spatially flat models with cold dark matter (CDM), a cosmological constant and a
broken-scale-invariant (BSI) step-like primordial (initial) spectrum of adiabatic perturbations …

We consider the primordial gravitational wave (GW) background in a class of spatially flat
inflationary cosmological models with cold dark matter (CDM), a cosmological constant, and …

In this thesis we investigate several aspects related to the theory of fluctuations in the
Cosmic Microwave Background. We develop a new algorithm to calculate the angular power …

We investigate the dynamical state of superclusters in Λ cold dark matter cosmological
models, where the density parameter Ω0= 0.2–0.4 and σ8 (the rms fluctuation on the 8 h− 1 …

The appearance of peaks in various primordial fluctuation Fourier power spectra is a generic
prediction of the inflationary scenario. We investigate whether future experiments, in …

We consider a double-inflationary model with two massive scalar fields interacting only
gravitationally in the context of a flat cold dark matter (CDM) universe. The cosmic …

Within the context of supersymmetric hybrid inflation, we study a multiple-stage inflationary
scenario that can generate a primordial spectrum of adiabatic density perturbations with a …

We consider a class of spatially flat cold dark matter (CDM) models, with a cosmological
constant and a broken-scale-invariant (BSI) steplike primordial spectrum of adiabatic …