%0 Journal Article %T On small time asymptotics for rough differential equations driven by fractional Brownian motions %A Fabrice Baudoin %A Cheng Ouyang %J Mathematics %D 2014 %I arXiv %X We survey existing results concerning the study in small times of the density of the solution of a rough differential equation driven by fractional Brownian motions. We also slightly improve existing results and discuss some possible applications to mathematical finance. %U http://arxiv.org/abs/1403.0872v1