Zhang Lixing, Shen Kaijun, Yan Yiying, Sun Kewei, Gelin Maxim F, Zhao Yang
School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore.
Department of Chemistry and Biochemistry, University of California Los Angeles, Los Angeles, California 90095, USA.
J Chem Phys. 2024 Nov 21;161(19). doi: 10.1063/5.0243861.
We examine the applicability of the numerically accurate method of time dependent variation with multiple Davydov Ansätze (mDA) to non-Hermitian systems. As illustrative examples, three systems of interest have been studied, a non-Hermitian system of dissipative Landau-Zener transitions, a non-Hermitian multimode Jaynes-Cummings model, and a dissipative Holstein-Tavis-Cummings model, all of which are shown to be effectively described by the mDA method. Our findings highlight the versatility of the mDA as a powerful numerical tool for investigating complex many-body non-Hermitian systems, which can be extended to explore diverse phenomena such as skin effects, excited-state dynamics, and spectral topology in the non-Hermitian field.
我们研究了采用多个达维多夫假设（mDA）的含时变分数值精确方法对非厄米系统的适用性。作为示例，我们研究了三个感兴趣的系统：一个耗散型朗道 - 齐纳跃迁的非厄米系统、一个非厄米多模杰恩斯 - 卡明斯模型以及一个耗散型霍尔斯坦 - 塔维斯 - 卡明斯模型，结果表明所有这些系统都可以通过mDA方法得到有效描述。我们的研究结果突出了mDA作为一种强大的数值工具在研究复杂多体非厄米系统方面的通用性，该方法可扩展用于探索非厄米领域中的各种现象，如趋肤效应、激发态动力学和光谱拓扑结构。
