KINK CAPTURE BY A LOCAL IMPURITY IN THE SINE-GORDON MODEL

被引：14

作者：

ZHANG, F

KIVSHAR, YS

MALOMED, BA

VAZQUEZ, L

机构：

[1] Departamento de Física Teórica I, Facultad de Ciencias Físicas, Universidad Complutense

来源：

PHYSICS LETTERS A | 1991年 / 159卷 / 6-7期

关键词：

D O I：

10.1016/0375-9601(91)90440-J

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We demonstrate analytically and numerically that the impurity mode plays a very important role in the kink scattering by a local inhomogeneity, and a sine-Gordon kink may be trapped by an impurity due to loss of its kinetic energy to excite the impurity mode. We develop a collective-coordinate approach to describe the kink-impurity interactions and calculate the threshold velocity of kink capture. Our numerical simulation results are in good agreement with the theoretical prediction.

引用

页码：318 / 322

页数：5

共 21 条

[1] BISHOP AR, 1989, DISORDER NONLINEARIT
[2] NONLINEAR DYNAMICS OF THE FRENKEL-KONTOROVA MODEL WITH IMPURITIES
BRAUN, OM
KIVSHAR, YS
[J]. PHYSICAL REVIEW B, 1991, 43 (01) : 1060 - 1073
[3] RESONANCE STRUCTURE IN KINK ANTIKINK INTERACTIONS IN PHI-4 THEORY
CAMPBELL, DK
SCHONFELD, JF
WINGATE, CA
[J]. PHYSICA D-NONLINEAR PHENOMENA, 1983, 9 (1-2) : 1 - 32
[4] KINK-ANTIKINK INTERACTIONS IN THE DOUBLE SINE-GORDON EQUATION
CAMPBELL, DK
PEYRARD, M
SODANO, P
[J]. PHYSICA D, 1986, 19 (02): : 165 - 205
[5] CAMPBELL DP, IN PRESS
[6] NUMERICAL-SIMULATION OF SINE-GORDON SOLITON DYNAMICS IN PRESENCE OF PERTURBATIONS
CURRIE, JF
TRULLINGER, SE
BISHOP, AR
KRUMHANSL, JA
[J]. PHYSICAL REVIEW B, 1977, 15 (12): : 5567 - 5580
[7] EXCITATION OF THE IMPURITY MODE BY TOPOLOGICAL SOLITONS IN A PSI-4 ATOMIC CHAIN
FRAGGIS, T
PNEVMATIKOS, S
ECONOMOU, EN
[J]. PHYSICS LETTERS A, 1989, 142 (6-7) : 361 - 366
[8] DYNAMICS OF SOLITONS IN NEARLY INTEGRABLE SYSTEMS
KIVSHAR, YS
MALOMED, BA
[J]. REVIEWS OF MODERN PHYSICS, 1989, 61 (04) : 763 - 915
[9] KIVSHAR YS, 1991, UNPUB PHYS REV LETT
[10] KIVSHAR YS, 1991, IN PRESS NONLINEARIT

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