准一维高分子链中振动子-极化子阻尼的研究
On the vibron-polaron damping in quasi 1D macromolecular chains
摘要：
研究了准一维大分子结构中分子内振动激发（振子）的性质。我们认为，由于振动子与光学声子模的相互作用，振动子可能形成部分修饰的小极化子态。这些状态的性质进行了研究，在依赖于基本的系统参数和温度的热浴。我们还研究了极化子振幅随温度和振子-声子耦合强度的衰减过程。两个不同的制度的极化子阻尼的发现和讨论。
英文摘要：
The properties of the intramolecular vibrational excitation (vibron) in a quasi 1D macromolecular structure are studied. It is supposed that due to the vibron interaction with optical phonon modes, a vibron might form partially dressed small polaron states. The properties of these states are investigated in dependence on the basic system parameters and temperature of a thermal bath. We also investigate the process of damping of the polaron amplitude as a function of temperature and vibron-phonon coupling strength. Two different regimes of the polaron damping are found and discussed.
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