Dynamic skin effects in non-Hermitian systems

Autor:	Li, Haoshu, Wan, Shaolong
Rok vydání:	2022
Předmět:	Quantum Physics Condensed Matter - Mesoscale and Nanoscale Physics Condensed Matter - Quantum Gases Physics - Optics
Zdroj:	Phys. Rev. B 106, L241112 (2022)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevB.106.L241112
Popis:	We study the time evolution processes of non-Hermitian systems under the open boundary condition and confirm that the dynamical skin effect exists in non-Hermitian systems analytically, and unveil the mechanism of its formation, which is caused by both the non-Hermitian skin effect and the Hermitian wave packet spreading. Furthermore, we find that in contrast to the uniform speed motion in Hermitian situations, the Gaussian wave packet can be accelerated and amplified during its time evolution in non-Hermitian systems. This additional motion is found to be responsible for the dynamic skin effect. Comment: 17 pages, 9 figures, including Supplemental Material
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2205.04804 Zobrazit plný text záznamu View this record from Arxiv