Whereas semiclassical gravity is based on the semiclassical Einstein equation with sources
given by the expectation value of the stress-energy tensor of quantum fields, stochastic semi …

We use the influence functional path-integral method to derive an exact master equation for
the quantum Brownian motion of a particle linearly coupled to a general environment …

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

We develop a perturbation scheme to treat the dynamics of a quantum Brownian particle
(coordinate x) coupled nonlinearly to a bath of oscillators (coordinates qn) with an …

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 examine from first principles one of the basic assumptions of modern quantum theories
of structure formation in the early Universe, ie, the conditions upon which fluctuations of a …

We continue our earlier investigation of the back reaction problem in semiclassical gravity
with the Schwinger-Keldysh or closed-time-path (CTP) functional formalism using the …

The quantum Brownian motion paradigm provides a unified framework where one can see
the interconnection of some basic quantum statistical processes such as decoherence …

The space-time explorer and quantum equivalence principle space test (STE-QUEST)
recently proposed, aims at performing a precision test of the weak equivalence principle …

We discuss the classical limit for the long-distance (“soft”) modes of a quantum field when
the hard modes of the field are in thermal equilibrium. We address the question of the correct …