Delta N Formalism in Cosmological Perturbation Theory

Early Universe cosmology is an active area of research and cosmic inflation is a pillar of modern cosmology. Among predictions of inflation, observationally the most important one is the generation of cosmological perturbations from quantum vacuum fluctuations that source all inhomogeneous structures in the Universe, not to mention the large-scale structures such as clusters of galaxies. Cosmological perturbation theory is the basic tool to study the perturbations g... >Voir plus