Breather trapping mechanism in piecewise homogeneous DNA

被引：32

作者：

Hisakado, M

机构：

[1] Department of Physics, Faculty of Science, University of Tokyo, Tokyo, Hongo 7-3-1, Bunkyo-ku

来源：

PHYSICS LETTERS A | 1997年 / 227卷 / 1-2期

关键词：

DNA dynamics; piecewise spatially homogeneous model; nonlinear Schrodinger equation; reflection and transmission of a soliton; breather trapping system;

D O I：

10.1016/S0375-9601(97)00023-6

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We consider a nonlinear DNA model which has discontinuities of the bases. The discontinuity is the difference of the number of the hydrogen bonds. Incident, reflected and transmitted waves are described by the nonlinear Schrodinger equations on different coordinates. Fission and reflection of a soliton due to the discontinuity are explicitly shown. Applying the results to DNA dynamics, we consider localized excitations. The breather trapping system is like a mouse trap.

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页码：87 / 93

页数：7

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