Relaxation Spectroscopy and Transport in Condensed Phases

詹姆斯·斯金纳教授得到了 理论和计算化学计划继续 他在松弛、光谱学和 在凝聚相中运输。 斯金纳雇佣了一个模型 由两个量子能级耦合到一个量子 用于研究放松的机械浴 流程，并应用于许多不同的分支 光谱学。 在通常的方法中，假设 量子能级和浴之间的耦合是 弱，并且初始密度矩阵因子为 量子能级的密度矩阵与一个的乘积 洗澡用的 斯金纳的方法不同之处在于， 约化密度弛豫性质的研究 矩阵不涉及这两个假设。 斯金纳将发展一个微观理论， 晶体中的线形，他将应用于 几个实验。 他还将开发一个统计 电子光谱力学动力学理论 液体和稠密气体如超临界流体。 %%% 过去十年的研究表明， 材料的许多重要特性。 此外该 电子在凝聚态物质中的传输， 对生物学和太阳能的重要影响 收集，很大程度上受到混乱的影响。 斯金纳的 研究在分子水平上提供了重要的见解 这将使我们更清楚地了解 这种无序会影响重要的材料性质 凝聚相化学系统。

Professor James Skinner is supported by a grant from the Theoretical and Computational Chemistry Program to continue his work in studies of relaxation, spectroscopy, and transport in condensed phases. Skinner employs a model system consisting of two quantum levels coupled to a quantum mechanical bath which is used for studies of relaxation processes, and has applications to many different branches of spectroscopy. In the usual approach it is assumed that the coupling between the quantum levels and the bath is weak, and that the initial density matrix factors into a product of density matrices for the quantum levels and one for the bath. Skinner's approach differs in that his studies of the relaxation properties of the reduced density matrix do not involve either of these two assumptions. Skinner will develop a microscopic theory of inhomogeneous lineshapes in crystals which he will apply to results of several experiments. He also will develop a statistical mechanical dynamical theory of electronic spectroscopy in liquids and dense gases such as supercritical fluids. %%% The last decade has shown that disorder is responsible for many important properties of materials. In addition, the transport of electrons in condensed matter, which has important implications for biology and solar energy collection, is greatly affected by disorder. Skinner's research provides important insights at the molecular level which will lead to a clearer understanding of the way in which disorder influences the important material properties of condensed phase chemical systems.