Long-time correlation tails in crystals |
| |
Authors: | AF Silva-Moreira |
| |
Institution: | Department of Physics (63-37) California Institute of Technology, Pasadena, CA 91125, U.S.A. |
| |
Abstract: | Nonequilibrium thermodynamics and the Onsager hypothesis are utilized to demonstrate that long-time correlation “tails”, decaying as t−3/2, should be expected in the velocity autocorrelation function of crystals. In the simplest situation, this behavior is due to the non-propagating (Rayleigh) mode. In the general case, it is argued that “diffusive” modes decaying in wavevector space as exp (−tK2), where is a constant, should lead to the same behavior. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|