Kinetic Theory of Slowly Relaxing Systems

缓慢松弛系统的动力学理论

• 批准号: 0716047
• 负责人: Hans Andersen
• 金额: $ 44万
• 依托单位: Stanford University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-08-15 至 2011-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0716047&HistoricalAwards=false
• 关键词: Kinetic; Theory; Slowly; Relaxing; Systems

Hans Andersen of Stanford University is supported by an award from the Theoretical and Computational Chemistry program to carry out research on the development of a kinetic theory for slowly relaxing systems of which glasses and proteins are common examples. In prior work supported by NSF, the PI developed a formally exact diagrammatic kinetic theory of liquids that led to a useful picture of dynamics on various time scales. In the current work, he is extending this method to look at temperatures below the critical temperature of mode coupling theory. The singularity which arises in mode coupling theory at that temperature might be an artifact of the theory and may have no relation to the true glass transition. This research will shed light on an important phase transition that occurs in glasses, of which proteins are an interesting example. It is expected to add to the body of techniques available for stimulating complex systems, and may open ways to treat the behavior of systems as complex as a biological cell, thus having a broad impact on a number of fields of science.

斯坦福大学的汉斯·安德森（Hans Andersen）获得了理论和计算化学项目的一项奖励，以开展关于缓慢弛豫系统的动力学理论发展的研究，其中玻璃和蛋白质是常见的例子。 在NSF支持的先前工作中，PI开发了一种形式上精确的液体图解动力学理论，导致了各种时间尺度上的动力学的有用图像。 在目前的工作中，他正在扩展这种方法，以研究低于模式耦合理论临界温度的温度。 在该温度下模式耦合理论中出现的奇点可能是理论的人为产物，可能与真正的玻璃化转变无关。 这项研究将揭示玻璃中发生的重要相变，其中蛋白质是一个有趣的例子。 预计它将增加可用于刺激复杂系统的技术，并可能开辟处理像生物细胞一样复杂的系统行为的方法，从而对许多科学领域产生广泛影响。