  Topological defects, such as quantum vortices, determine the properties of
quantum fluids. The study of their properties has been at the center of
activity in solid state and BEC communities. On the other hand, the non-trivial
behavior of wavepackets, such as the self-accelerating Airy beams, has also
been intriguing physicists. Here, we study the formation, evolution, and
interaction of optical vortices in wavepackets at the Dirac point in photonic
graphene. We show that even in a non-interacting two-component system the
topological excitations appearing in a wavepacket can still be considered as
"particles", capable of mutual interaction, with their trajectory obeying the
laws of dynamics.
