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DDMRG

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DDMRG (DynamicalDMRG) is a program for analyzing the dynamical properties of one-dimensional electron systems by using the density matrix renormalization group method. It simulates excited or photo-induced quantum phenomena in Mott insulators, spin-Peierls materials, organic materials, etc. Parallel computational procedures for linear and non-linear responses in low dimensional electron systems and analyzing routines for relaxation processes of excited states induced by photo-irradiation are available.

Information
Last Update:2022/01/13

Official site

https://www.r-ccs.riken.jp/labs/cms/DMRG/Dynamical_DMRG_en.html

License

Per consultation

Availability

Development language: Fortran90
Operating environment: Scalar machines such as the K supercomputer
Core Developers

Takami Tohyama (Tokyo University of Science), Shigetoshi Sota(RIKEN), Hiroaki Matsueda (National Institute of Technology, Sendai College)
Target substance/model

One-dimensional Mott insulators such as Sr2CuO3 and one-dimensional spin-Peierls substances (CuGeO3)
Physical quantities that can be computed

Dynamic correlation functions (linear and nonlinear) and physical quantities related to electron state. Real-time simulation of the dependence of these quantities on temperature, as well as excitation/relaxation processes.
Methodology

Dynamic density matrix renormalization group method
Related keywords
Document
  1. “Relaxation Dynamics of Photocarriers in One-Dimensional Mott Insulators Coupled to Phonons”, H. Matsueda, S. Sota, T. Tohyama and S. Maekawa
    J. Phys. Soc. Jpn. 81, (2012) 013701 (1-4).
  2. “Density matrix renormalization group study of optical conductivity in the one-dimensional Mott insulator Sr2CuO3”, S. Sota and T. Tohyama
    Phys. Rev. B 82, (2010) 195130 (1-5).
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