This pedagogical review aims at presenting the fundamental aspects of the theory of
inflationary cosmological perturbations of quantum-mechanical origin. The analogy with the …

Bringing together the key ideas from nonequilibrium statistical mechanics and powerful
methodology from quantum field theory, this 2008 book captures the essence of …

In this report we introduce the basic techniques (of the closed-time-path (CTP) coarse-
grained effective action (CGEA)) and ideas (scaling, coarse-graining and backreaction) …

We show how the quantum-to-classical transition of the cosmological fluctuations produced
during inflation can be described by means of the influence functional and the master …

We discuss the possible role of isocurvature perturbations for the quantum decoherence of
the curvature perturbation during inflation. We point out that if the inflaton trajectory in field …

We show a completely analytical approach to the decoherence induced by a zero
temperature environment on a Brownian test particle. We consider an Ohmic environment …

Macroscopic quantum phenomena (MQP) is a relatively new research venue, with exciting
ongoing experiments and bright prospects, yet with surprisingly little theoretical activity …

We show how the quantum to classical transition of the cosmological fluctuations produced
during inflation can be described by means of the influence functional and the master …

It has been shown that gravitational fields produced by realistic classical-matter distributions
can force quantum vacuum fluctuations of some nonminimally coupled free scalar fields to …

We study the onset of a classical order parameter after a second-order phase transition in
quantum field theory. We consider a quantum scalar field theory in which the system-field …