Abstract
Dynamical equations are derived, which describe the space-time development of second-order coherence tensors of a quantized electromagnetic field in vacuo. With the help of these equations, laws for the conservation of correlations are obtained. Some new non-negative-definiteness conditions which the coherence tensors obey are also established.
- Received 27 October 1966
DOI:https://doi.org/10.1103/PhysRev.157.1183
©1967 American Physical Society