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arXiv 1707.02425physics.bio-ph
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长程相互作用阻尼DNA系统的非线性动力学

Nonlinear dynamics of damped DNA systems with long-range interactions

J. Brizar Okaly, Alain Mvogo, R. Laure Woulaché, T. Crépin Kofané

摘要:

本文研究了阻尼Peyrard-Bishop DNA模型的非线性动力学行为,该模型考虑了DNA碱基对之间的弹性耦合常数和距离依赖性|l| ^-s的长程相互作用.考虑到斯托克斯和长程流体动力学阻尼力,我们使用离散差分算子技术,并显示在短波长模式的晶格方程可以由复杂的Ginzburg-Landau方程。我们分析发现,该技术导致正确的呼吸孤子参数的表达式。我们发现粘性使呼吸器的振幅衰减。我们比较近似的解析结果与数值模拟的值s = 3(偶极-偶极相互作用)。

英文摘要:

We investigate the nonlinear dynamics of a damped Peyrard-Bishop DNA model taking into account long-range interactions with distance dependence |l|^-s on the elastic coupling constant between different DNA base pairs. Considering both Stokes and long-range hydrodynamical damping forces, we use the discrete difference operator technique and show in the short wavelength modes that the lattice equation can be governed by the complex Ginzburg-Landau equation. We found analytically that the technique leads to the correct expression for the breather soliton parameters. We found that the viscosity makes the amplitude of the breather to damp out. We compare the approximate analytic results with numerical simulations for the value s = 3 (dipole-dipole interactions).

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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