Brownian motion in short range random potentials

被引：46

作者：

Romero, AH ^{[1
]}

Sancho, JM

机构：

[1] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA

[2] Univ Calif San Diego, Dept Biochem & Chem, La Jolla, CA 92093 USA

[3] Univ Calif San Diego, Dept 0407, Inst Nonlinear Sci, La Jolla, CA 92093 USA

[4] Dept Estructura & Constituents Mat, Barcelona 08028, Spain

来源：

PHYSICAL REVIEW E | 1998年 / 58卷 / 03期

关键词：

D O I：

10.1103/PhysRevE.58.2833

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

A numerical study of Brownian motion of noninteracting particles in random potentials is presented. The dynamics are modeled by Langevin equations in the high friction limit. The random potentials are Gaussian distributed and short ranged. The simulations are performed in one and two:dimensions. Different dynamical regimes are found and explained. Effective subdiffusive exponents are obtained and commented on.

引用

页码：2833 / 2837

页数：5

共 8 条

[1] ANOMALOUS DIFFUSION IN DISORDERED MEDIA - STATISTICAL MECHANISMS, MODELS AND PHYSICAL APPLICATIONS [J].

BOUCHAUD, JP ;

GEORGES, A .

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 1990, 195 (4-5) :127-293

[2] The motion of elements suspended in static liquids as claimed in the molecular kinetic theory of heat [J].

Einstein, A .

ANNALEN DER PHYSIK, 1905, 17 (08) :549-560

[3] GENERATION OF SPATIOTEMPORAL COLORED NOISE [J].

GARCIAOJALVO, J ;

SANCHO, JM ;

RAMIREZPISCINA, L .

PHYSICAL REVIEW A, 1992, 46 (08) :4670-4675

[4] External fluctuations in a pattern-forming instability [J].

GarciaOjalvo, J ;

Sancho, JM .

PHYSICAL REVIEW E, 1996, 53 (06) :5680-5689

[5]

Gard T., 1987, INTRO STOCHASTIC DIF

[6] DIFFUSION IN REGULAR AND DISORDERED LATTICES [J].

HAUS, JW ;

KEHR, KW .

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 1987, 150 (5-6) :263-406

[7] EXACT CALCULATION OF THE ANOMALOUS DIMENSION OF THE DIFFUSION-COEFFICIENT FOR A MODEL OF A RANDOM-WALK IN A RANDOM POTENTIAL [J].

HONKONEN, J ;

PISMAK, YM .

JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL, 1989, 22 (18) :L899-L905

[8] RANDOM-WALKS IN MEDIA WITH CONSTRAINED DISORDER [J].

KRAVTSOV, VE ;

LERNER, IV ;

YUDSON, VI .

JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL, 1985, 18 (12) :L703-L707

← 1 →