Semiclassical typicality in open quantum systems

开放量子系统中的半经典典型性

• 批准号: 399787697
• 负责人: Professor Dr. Frank Thomas Großmann
• 金额: --
• 依托单位: Institut für Theoretische Physik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2018
• 资助国家: 德国
• 起止时间: 2017-12-31 至 2021-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/399787697?language=en
• 关键词: Semiclassical; typicality; open; quantum; systems

The goal of the project is to describe and to understand the equilibration dynamics of a system proper in contact with a heat bath on the wavefunction level using a semiclassical formulation of the quantum dynamics of the (finite) composite system. We will focus on systems of continuous variables where, in contrast to spin systems, every single degree of freedom already has an infinitely large Hilbert space. Using the time-dependent semiclassical (hybrid) approach, composite systems with more than 100 degrees of freedom can and will be treated explicitely. Different well established measures will allow to investigate the time scale of the equilibration dynamics and its dependence on system size.

该项目的目标是使用（有限）复合系统的量子动力学的半经典公式来描述和理解在波函数水平上与热浴适当接触的系统的平衡动力学。我们将重点关注连续变量系统，与自旋系统相比，其中每个自由度都已经具有无限大的希尔伯特空间。使用瞬态半经典（混合）方法，可以并且将会明确处理具有超过 100 个自由度的复合系统。不同的成熟措施将允许研究平衡动力学的时间尺度及其对系统尺寸的依赖性。

项目成果

Stabilization of adiabatic population transfer by strong coupling to a phonon bath

• DOI: 10.1103/physreva.102.063710
• 发表时间: 2020-12
• 期刊: Physical Review A
• 影响因子: 2.9
• 作者: Michael Werther;F. Grossmann

On the Husimi Version of the Classical Limit of Quantum Correlation Functions

关于量子相关函数经典极限的 Husimi 版本

• DOI: 10.3390/condmat5010003
• 发表时间: 2020
• 作者: S. Loho Choudhury;F. Großmann
• 通讯作者: F. Großmann

Quantum approach to the thermalization of the toppling pencil interacting with a finite bath

倾倒铅笔与有限浴相互作用的热化的量子方法

• DOI: 10.1103/physreva.105.022201
• 发表时间: 2022
• 期刊: Physical Review A
• 影响因子: 2.9
• 作者: S. Loho Choudhury;F. Großmann
• 通讯作者: F. Großmann

Non-Markovian vibrational relaxation dynamics at surfaces.

表面非马尔可夫振动弛豫动力学

• DOI: 10.1063/5.0092836
• 发表时间: 2022
• 期刊: The Journal of chemical physics
• 作者: E. W. Fischer;M. Werther;F. Bouakline;F. Großmann;P. Saalfrank
• 通讯作者: P. Saalfrank

Apoptosis of moving nonorthogonal basis functions in many-particle quantum dynamics

• DOI: 10.1103/physrevb.101.174315
• 发表时间: 2019-08
• 期刊: Physical Review B
• 影响因子: 3.7
• 作者: Michael Werther;F. Grossmann