A nonlinear drift which leads to kappa-generalized distributions

作者:Wada T*
来源:European Physical Journal B, 2010, 73(2): 287-291.
DOI:10.1140/epjb/e2009-00429-3

摘要

We consider a system described by a Fokker-Planck equation with a new type of momentum-dependent drift coefficient which asymptotically decreases as -1/p for a large momentum p. It is shown that the steady-state of this system is a kappa-generalized Gaussian distribution, which is a non-Gaussian distribution with a power-law tail.

  • 出版日期2010-1