The Oscillator Strength of a Dipole Transition in a Lorentz-Lorenz Field

Jingzhong Guo, Alan Gallagher, J. Cooper

E. P. Solodovnikova, А.Н. Тавхелидзе, Олег Антонинович Хрусталев

Haider R. Zaidi

The effect of resonant collisions resulting from (Coulomb) dipole-dipole interaction is examined on optical bistability in the mean-field approximation. A propagator formulation is employed. A generalization of the standard equations of state for the absorptive-dispersive bistability is obtained. It is found that Lorentz-Lorenz local-field correction produces a small but appreciable shift of the optical-phase-transition point.

Janne Ruostekoski, Juha Javanainen

We study the quantum field theory of light-matter interactions for quantum degenerate atomic gases at low light intensity. We argue that the contact interactions between atoms emerging in the dipole gauge may be ignored. Specifically, they are canceled by concurrent infinite level shifts of the atoms. Our development yields the classic Lorentz-Lorenz local-field shift of the atomic resonance.

Margaret N. Lewis, Louis C. Green

Гарий Владимирович Ефимов, W. Vonwaldenfels