Spacetimes with horizons show a resemblance to thermodynamic systems and it is possible
to associate the notions of temperature and entropy with them. Several aspects of this …

A review is presented of the unitarity problem in modern quantum cosmology-quantum
gravity theory of spatially closed worlds. Based on the usual path-integral quantization of …

Quantum theory seems to be a universal framework for physical theories. In fact, most of the
interactions found in Nature are already successfully accommodated into this framework …

The aim of this paper is to provide a general introduction to the problem of time in quantum
gravity. This problem originates in the fundamental conflict between the way the concept …

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 …

The quantization of a simple dynamical system in which a unitary time evolution appears
only within a certain approximation is studied in detail. The probabilistic interpretation of …

The author describes the modern approach to quantum cosmology, as initiated by Hartle
and Hawking, Linde, Vilenkin and others. The primary aim is to explain how one determines …

TIME AND INTERPRETATIONS OF QUANTUM GRAVITY | International Journal of Modern
Physics D World Scientific Search This Journal Anywhere Quick Search in Journals Enter …

We derive corrections to the Schrödinger equation which arise from the quantization of the
gravitational field. This is achieved through an expansion of the full functional Wheeler …

We study a formulation of quantum mechanics in which the central notion is that of a
quantum-mechanical history—a sequence of events at a succession of times. The primary …