Constructing a new lattice model for atomic dynamics using symmetry of lattice

2014 Fiscal Year Final Research Report

• Project/Area Number: 24560074
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Engineering fundamentals
• Research Institution: Osaka University
• Principal Investigator: DOI Yusuke 大阪大学, 工学(系)研究科(研究院), 准教授 (10403172)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 非線形格子 / 離散ブリーザー / 非線形局在モード

Outline of Final Research Achievements

We obtain high mobility of intrinsic localized mode in anharmonic lattice by constructing a symmetric lattice which has rotational symmetry in the complex normal mode of the corresponding lattice. Highly efficient method for searching a symmetric lattice for FPU lattice is constructed. Therefore we can calculate dynamics of the large particle symmetric lattice. We investigate the structure of ILM and dynamics of ILM in the large symmetric lattices. Adding to this, we obtain a method for constructing symmetric lattices for general lattice systems.

Free Research Field

非線形格子力学