摘要翻译：
DNA中正电荷转移的微观机制尚不清楚。DNA中电子空穴的量子态是由不同碱基对之间的pi堆叠作用b$涂抹电荷以及与试图捕获电荷的局域环境的相互作用λ$之间的竞争决定的。为了确定哪个相互作用起主导作用，我们研究了不同的$(GC)_{n}_序列中的电荷量子态，选择了满足电荷转移率平衡的实验数据的DNA参数$g^{+}\leftrightarrow G_{n}^{+}$,$n=2,3$\cite{FredMain}。我们表明，实验数据只能在$B\ll\lambda$的假设下与理论相一致，这意味着电荷通常局限在一个$G$的位置上。因此，任何DNA序列，包括由相同碱基对组成的序列，其行为更像是绝缘材料，而不是分子导体。
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英文标题：
《Strong Localization of Positive Charge in DNA》
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作者：
D. B. Uskov and A. L. Burin
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最新提交年份：
2008
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分类信息：

一级分类：Physics        物理学
二级分类：Soft Condensed Matter        软凝聚态物质
分类描述：Membranes, polymers, liquid crystals, glasses, colloids, granular matter
膜，聚合物，液晶，玻璃，胶体，颗粒物质
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一级分类：Physics        物理学
二级分类：Statistical Mechanics        统计力学
分类描述：Phase transitions, thermodynamics, field theory, non-equilibrium phenomena, renormalization group and scaling, integrable models, turbulence
相变，热力学，场论，非平衡现象，重整化群和标度，可积模型，湍流
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英文摘要：
  Microscopic mechanisms of positive charge transfer in DNA remain unclear. A quantum state of electron hole in DNA is determined by the competition of a pi-stacking interaction $b$ smearing a charge between different base pairs and interaction $\lambda$ with the local environment which attempts to trap charge. To determine which interaction dominates we investigated charge quantum states in various $(GC)_{n}$ sequences choosing DNA parameters satisfying experimental data for the balance of charge transfer rates $G^{+} \leftrightarrow G_{n}^{+}$, $n=2,3$ \cite{FredMain}. We show that experimental data can be consistent with theory only under an assumption $b\ll \lambda$ meaning that charge is typically localized within a single $G$ site. Consequently any DNA sequence including the one consisting of identical base pairs behaves more like an insulating material than a molecular conductor.
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PDF链接：
https://arxiv.org/pdf/801.3502