Fudan Univ, Dept Phys, Shanghai 200433, Peoples R China; Fudan Univ, TD Lee Phys Lab, Shanghai 200433, Peoples R China; Fudan Univ, Plasma Phys Lab, Shanghai 200433, Peoples R China; Acad Sinica, Inst Phys, Beijing 100080, Peoples R China; Acad Sinica, Inst Theoret Phys, Beijing 100080, Peoples R China
英文摘要:
The present paper shows that in one-dimensional collisionless plasma, due to large fluctuation, the time correlation of momentum asymptotically behaves inverse quadratically with time. The long-time tail correlation is closely related to nonlinear Landau damping [M.B. Isichenko, Phys. Rev. Lett. 78, 2369 (1997)]. Furthermore, it reveals the possible relationship between fluctuation and dispersion. The result indicates that the long-time tail correlation can also occur in a reversibly dispersive system, where the previous theories are invalid. A by-product proves that it may be efficient to investigate the dispersive features of collisionless plasma in view of time correlation.
