%0 Journal Article %T A fractional Brownian motion model for the turbulent refractive index in lightwave propagation %A Dario G. Perez %A Luciano Zunino %A Mario Garavaglia %J Physics %D 2003 %I arXiv %R 10.1016/j.optcom.2004.08.007 %X It is discussed the limitations of the widely used markovian approximation applied to model the turbulent refractive index in lightwave propagation. It is well-known the index is a passive scalar field. Thus, the actual knowledge about these quantities is used to propose an alternative stochastic process to the markovian approximation: the fractional Brownian motion. This generalizes the former introducing memory; that is, there is correlation along the propagation path. %U http://arxiv.org/abs/physics/0307052v4