Gauge freedom in quantum electrodynamics (QED) outside of textbook regimes is reviewed.
It is emphasized that QED subsystems are defined relative to a choice of gauge. Each …

An overview is given of the molecular quantum electrodynamical (QED) theory of resonance
energy transfer (RET). In this quantized radiation field description, RET arises from the …

Let A and B be two atoms or, more generally, a ''source''and a ''detector''separated by some
distance R. At t= 0A is in an excited state, B in its ground state, and no photons are present …

According to quantum field theory, empty space—the ground state with all real excitations
removed—is not empty, but filled with quantum-vacuum fluctuations. Their presence can …

This book discusses quantum optics and investigates the quantum properties of interactions
between atoms and laser fields. It is divided into three parts. Part I introduces the elementary …

In nonrelativistic quantum mechanics the wave‐function of a free particle which initially is in
a finite volume immediately spreads to infinity. In a nonrelativistic theory this is of no …

The theory of photodetection and quantum-optical coherence is formulated in the
Heisenberg picture and in such a way that the causal propagation of fields at the velocity of …

Dispersion interactions are long-range interactions between neutral ground-state atoms or
molecules, or polarizable bodies in general, due to their common interaction with the …

A critical analysis of the problem of causality in the energy transfer between a pair of atoms
is carried out. One of the pair, the source, is initially excited and the other, the detector, is in …

From the viewpoint of quantum electrodynamics, 1 one of the most basic intermolecular
interactions is that between two bodies, one of which is excited, with the other in the ground …