Temperature Variation of Ultra Slow Light in a Cold Gas
G. Morigi, G. S. Agarwal
Abstract
A model is developed to explain the temperature dependence of the group velocity as observed in the experiments of Hau et al (Nature 397, 594 (1999)). The group velocity is quite sensitive to the change in the spatial density. The inhomogeneity in the density and its temperature dependence are primarily responsible for the observed behavior.
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