Equilibrium correlations in charged fluids coupled to the radiation field.
We provide an exact microscopic statistical treatment of particle and field correlations in a system of quantum charges in equilibrium with a classical radiation field. Using the Feynman-Kac-Itô representation of the Gibbs weight, the system of particles is mapped onto a collection of random charged wires. The field degrees of freedom can be integrated out, providing an effective pairwise magnetic potential. We then calculate the contribution of the transverse field coupling to the large-distance particle correlations. The asymptotics of the field correlations in the plasma are also exactly determined.
El Boustani
Sami
S
Institute of Theoretical Physics, Swiss Federal Institute of Technology Lausanne, CH-1015 Lausanne EPFL, Switzerland.
Buenzli
Pascal R
PR
Martin
Philippe A
PA