Long-time behavior and relaxation of power-law correlation in   one-dimensional self-gravitating system
  Long-time behavior of spatial power-law correlation in one-dimensional self-gravitating system is numerically investigated. It is found that the power-law structure persists even after the system is virialized. The structure gradually disappears owing to energy exchange among particles. Energy distribution is quasi-stationary after the system is virialized. 
Hiroko Koyama and Tetsuro Konishi