  Heavy quark dynamics in an anisotropic QCD medium have been analyzed within
the Fokker-Planck approach. Heavy quark drag force and momentum diffusion
tensor have been decomposed by employing a general tensor basis for an
anisotropic medium. Depending upon the relative orientation of the direction of
the momentum anisotropy of the medium and heavy quark motion, two drag and four
diffusion coefficients have been estimated in the anisotropic QCD medium. The
relative significance of different components of drag and momentum diffusion
coefficients has been explored. The dependence of the angle between the
anisotropic vector and heavy quark motion to the drag and diffusion
coefficients has also been studied. Further, the energy loss of heavy quarks
due to the elastic collisional process in an anisotropic medium has been
studied. It is seen that the anisotropic contributions to heavy quark transport
coefficients and its collisional energy loss have a strong dependence on the
direction and strength of momentum anisotropy in the QCD medium.
