DIFFUSION OF RANDOMLY DRIVEN SOLITONS IN MOLECULAR CHAINS

被引：7

作者：

FLYTZANIS, N

IVIC, Z

MALOMED, BA

机构：

[1] VINCA INST NUCL SCI, DEPT THEORET PHYS, YU-11001 BELGRADE, YUGOSLAVIA

[2] TEL AVIV UNIV, SCH MATH SCI, DEPT APPL MATH, IL-69978 TEL AVIV, ISRAEL

来源：

EUROPHYSICS LETTERS | 1995年 / 30卷 / 05期

关键词：

D O I：

10.1209/0295-5075/30/5/003

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We examine the diffusive motion of solitons in a model of a molecular chain reducible to the non-linear Schrodinger equation driven by thermal fluctuations in the host lattice. Using the Fokker-Planck equation for the distribution function of the soliton's position, we conclude that the soliton exhibits an effectively free random walk, the corresponding diffusion constant showing a linear temperature dependence.

引用

页码：267 / 272

页数：6

共 21 条

[1] THE QUANTUM LIFETIME OF THE DAVYDOV SOLITON [J].

BOLTERAUER, H ;

OPPER, M .

ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 1991, 82 (01) :95-103

[2] APPLICABILITY OF HAMILTON EQUATIONS IN THE QUANTUM SOLITON PROBLEM [J].

BROWN, DW ;

LINDENBERG, K ;

WEST, BJ .

PHYSICAL REVIEW A, 1986, 33 (06) :4104-4109

[3] UNIFICATION OF POLARON AND SOLITON THEORIES OF EXCITON TRANSPORT [J].

BROWN, DW ;

IVIC, Z .

PHYSICAL REVIEW B, 1989, 40 (14) :9876-9887

[4]

DAVYDOV AS, 1982, USP FIZ NAUK+, V138, P603, DOI 10.1070/PU1982v025n12ABEH005012

[5] SOLITARY EXCITONS IN ONE-DIMENSIONAL MOLECULAR CHAINS [J].

DAVYDOV, AS ;

KISLUKHA, NI .

PHYSICA STATUS SOLIDI B-BASIC RESEARCH, 1973, 59 (02) :465-470

[6]

DAVYDOV AS, 1980, TEOR MAT FIZ, V43, P367

[7] QUANTUM AND DISORDER EFFECTS IN DAVYDOV SOLITON THEORY [J].

FORNER, W .

PHYSICAL REVIEW A, 1991, 44 (04) :2694-2708

[8] ELECTRONS IN LATTICE FIELDS [J].

FROHLICH, H .

ADVANCES IN PHYSICS, 1954, 3 (11) :325-&

[9] STUDIES OF POLARON MOTION .1. THE MOLECULAR-CRYSTAL MODEL [J].

HOLSTEIN, T .

ANNALS OF PHYSICS, 1959, 8 (03) :325-342

[10] SELF-TRAPPING IN QUASI-ONE-DIMENSIONAL ELECTRON-PHONON AND EXCITON-PHONON SYSTEMS [J].

IVIC, Z ;

KAPOR, D ;

SKRINJAR, M ;

POPOVIC, Z .

PHYSICAL REVIEW B, 1993, 48 (06) :3721-3733

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