標題: GROWTH, SELF-RANDOMIZATION, AND PROPAGATION IN A LORENTZ LATTICE-GAS
作者: MENG, HF
COHEN, EGD
物理研究所
Institute of Physics
公開日期: 1-十月-1994
摘要: A systematic study is carried out of a Lorentz lattice gas in order to model the growth dynamics of order-disorder interfaces. In the model, a particle, initially at the origin, moves on the bonds of an initially ordered square lattice, with sites covered by periodically repeated square blocks of 1, 4, or 9 right or left scattering rotators, whose orientations change after collisions with the particle. Depending then on the initial conditions of the blocks and the particle, one observes the following: (a) the particle randomizes the rotator orientations completely, in an ever growing disordered ''liquid'' phase inside the ordered ''solid'' phase on the rest of the lattice; (b) the particle propagates suddenly after a transient randomization period as in (a); or (c) the particle propagates through the ordered lattice immediately. A simple picture for the growth of the randomized region, which proceeds via an interface of fractal dimension 0.75, is discussed. The nature of the propagation for the cases mentioned can be modified by collisions with impurities.
URI: http://dx.doi.org/10.1103/PhysRevE.50.2482
http://hdl.handle.net/11536/2288
ISSN: 1063-651X
DOI: 10.1103/PhysRevE.50.2482
期刊: PHYSICAL REVIEW E
Volume: 50
Issue: 4
起始頁: 2482
結束頁: 2487
顯示於類別:期刊論文