Density Matrix Renormalization Group Studies of Quasi One- Dimensional Systems

准一维系统的密度矩阵重整化群研究

• 批准号: 9509945
• 负责人: Steven White
• 金额: $ 16.5万
• 依托单位: University of California-Irvine
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-07-01 至 1998-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9509945&HistoricalAwards=false
• 关键词: Density; Matrix; Renormalization; Group; Studies

9509945 White Density matrix renormalization group calculations will be done on a number of quasi-one-dimensional systems. The density function renormalization group technique is a new numerical method to obtain accurate results for single-chain magnetic and electronic systems. The technique was developed by the principal investigator. The tecnique can be extended to quasi-low-dimensional systems by coupling single chains. Algorithms for this new computational method will be developed to improve efficiency and to enable study of systems with greater width. The focus will be on coupled Heisenberg and Hubbard chains. %%% The primarily computational research will both improve an exciting new algorithm and apply it to model systems which are thought to describe real materials of current interest, e.g., high temperature superconductors. ***

9509945白色密度矩阵重整化群计算将在一些准一维系统上进行。 密度泛函重整化群方法是一种新的数值方法，它可以得到单链磁电子系统的精确结果。 这项技术是由首席研究员开发的。 通过耦合单链，该方法可以推广到准低维系统。 将开发这种新计算方法的算法，以提高效率，并使研究具有更大宽度的系统成为可能。 重点将放在耦合的海森堡链和哈伯德链上。 主要的计算研究将改进一种令人兴奋的新算法，并将其应用于被认为描述当前感兴趣的真实的材料的模型系统，例如，高温超导体 ***