Fluctuation dynamics and formation of exotic shape
  To study the role of fluctuation in the collisional dynamics, Boltzmann- Langevin formalism is applied in a two dimensional scenario. The importance of collective flow towards the formation of hollow structure is exhibited in our simulation result. The observation of large clusters along the transverse direction indicates the non-equilibrium aspects of the fragmentation process in the late stage of the reaction. 
S. Chattopadhyay