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 …

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 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 …

An appealing feature of inflationary cosmology is the presence of a phase-space
attractor,``slow roll'', which washes out the dependence on initial field velocities. We …

During inflation, vacuum quantum fluctuations are amplified and stretched to astrophysical
distances. They give rise to fluctuations in the cosmic microwave background (CMB) …

In this work we consider the effects of gravitons and their fluctuations on the dynamics of two
masses using the Feynman-Vernon influence functional formalism, applied earlier to …

We examine the origin of the Newton–Schrödinger equations (NSEs) that play an important
role in alternative quantum theories (AQT), macroscopic quantum mechanics and gravity …

We explore further the proposal [Hu, BL (1996). General relativity as geometro-
hydrodynamics.(Invited talk at the Second Sakharov Conference, Moscow, May 1996); gr …

We investigate the nature of a gravitational two-state system (G2S) in the simplest setup in
Newtonian gravity. In a quantum description of matter a single motionless massive particle …