Shifts of a Resonance Line in a Dense Atomic Sample
Juha Javanainen, Janne Ruostekoski, Yi Li +1 more
We study the collective response of a dense atomic sample to light essentially exactly using classical-electrodynamics simulations. In a homogeneously broadened atomic sample there is no overt Lorentz-Lorenz local field shift of the resonance, nor a collective Lamb shift. However, the addition of inhomogeneous broadening restores the usual mean-field phenomenology.
arXiv:1308.6254•Physical Review Letters•Mar 21, 2014•156 citations