| 细胞骨架微管管壁的赝自旋模型 |
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| 引用本文： | 陈莹,邱锡钧,李儒新.细胞骨架微管管壁的赝自旋模型[J].中国物理 B,2005,14(2):427-432. |
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| 作者姓名： | 陈莹 邱锡钧 李儒新 |
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| 作者单位： | Department of Physics, Shanghai University, Shanghai 200436, China; Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China;Department of Physics, Shanghai University, Shanghai 200436, China;Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China |
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| 基金项目： | Project supported by the National Natural Science Foundation of China (Grant Nos 69925513 and 19974058). |
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| 摘 要： | 本文利用赝自旋模型描述细胞骨架微管管壁上的非束缚电子的动力学行为。基于微管的固有的对称结构及其电学性质，将其处理为一维铁电系统，用双阱势描述组成微管管壁的单个蛋白丝上的电偶极子的非线性动力学行为，进而，将此物理问题影射到赝自旋系统，并且通过采用平均场近似得到了一些物理结果。
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| 关 键 词： | 微管 双阱势 赝自旋哈密顿量 平均场近似 |
| 收稿时间： | 9/7/2004 12:00:00 AM |
A pseudo-spin model for the wall of cytoskeletal microtubule |
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| Chen Ying,Qiu Xi-Jun and Li Ru-Xin.A pseudo-spin model for the wall of cytoskeletal microtubule[J].Chinese Physics B,2005,14(2):427-432. |
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| Authors: | Chen Ying Qiu Xi-Jun and Li Ru-Xin |
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| Institution: | Department of Physics, Shanghai University, Shanghai 200436, China; Department of Physics, Shanghai University, Shanghai 200436, China; Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China; Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China |
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| Abstract: | A pseudo-spin model is intended to describe the physical dynamics of unbound electrons in the wall of cytoskeletal microtubule (MT). Due to the inherent symmetry of the structure and the electric properties in the MT, one may treat it as a one-dimensional ferroelectric system, and describe the nonlinear dynamics of dimer electric dipoles in one protofilament of the MT by virtue of the double-well potential. Consequently, the physical problem has been mapped onto the pseudo-spin system, and the mean-field approximation has been taken to get some physical results. |
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| Keywords: | cell microtubule double-well potential pseudo-spin hamiltonian mean-field approximation |
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