Molecular dynamics simulations of ballistic annihilation.
Using event-driven molecular dynamics we study one- and two-dimensional ballistic annihilation. We estimate exponents xi and gamma, which describe the long-time decay of the number of particles [n(t) approximately t-xi] and of their typical velocity [v(t) approximately t-gamma]. To a good accuracy our results confirm the scaling relation xi+gamma=1. In the two-dimensional case our results are in good agreement with those obtained from Boltzmann kinetic theory.
Lipowski
Adam
A
Faculty of Physics, Adam Mickiewicz University, 61-614 Poznań, Poland.
Lipowska
Dorota
D
Ferreira
António L
AL