Hierarchical equations of motion in the Libra software package

Hierarchical equations of motion in the Libra software package
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Libra 软件包中的分层运动方程

DOI:
10.1002/qua.26373
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发表时间:
2020
影响因子:
2.2
通讯作者:
Akimov, Alexey V.
Akimov, Alexey V.
中科院分区:
化学3区
文献类型:
--
作者:
Temen, Story;Jain, Amber;Akimov, Alexey V.

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我们报告了开源Libra软件中分层运动方程(HEOM)模块的实现。它包括用于计算与谐波浴相互作用的开放量子系统的动力学的标准和缩放HEOM算法。该模块允许计算约化密度矩阵的演化以及谱线形状。截断、过滤和“更新列表”方案以及OpenMP并行化允许进一步节省计算。该软件包是用C++和Python语言混合编写的,在用户友好性和效率之间实现了最佳折衷。该包的Python层利用了标准Python库,如h5py,它允许高效地存储和检索生成的结果。该软件包可以无缝地使用在笔记本电脑,其精心设计应提供最大的方便和直观性,其用户。
We report the implementation of a hierarchical equations of motion (HEOM) module within the open‐source Libra software. It includes the standard and scaled HEOM algorithms for computing the dynamics of open quantum systems interacting with a harmonic bath. The module allows the computing of the evolution of the reduced density matrix, as well as spectral lineshapes. The truncation, filtering, and “update list” schemes, as well as OpenMP parallelization, allow for further computational saving. The package is written in a mix of C++ and Python languages, delivering the best compromise between user friendliness and efficiency. The Python layer of the package takes advantage of standard Python libraries, such as h5py, which allows efficient storage and retrieval of the generated results. The package can be seamlessly used within Jupyter notebooks; its careful design shall provide the maximal convenience and intuitiveness to its users.
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DOI: --
发表时间: 2019
期刊:
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