degeneraciesquantumA summary, with references and additional comments, of a talk delivered at the Second International Workshop on Pseudohermitian Hamiltonians in Quantum Physics (Prague, 14-16 June 2004). After explaining some general features of nonhermitian degeneracies ('exceptional points'), ...
Non-Hermitian degeneracies,also known as exceptional points(EPs),have been the focus of much attention due to their singular eigenvalue surface structure.N... S Baek,HP Sang,D Oh,... - 光:科学与应用(英文版) 被引量: 0发表: 2023年 Experimental study of the high-order exceptional points ...
Physics of nonhermitian degeneracies. Czech. J. Phys. 54, 1039 (2004). Article ADS Google Scholar Heiss, W. D. Exceptional points—their universal occurrence and their physical significance. Czech. J. Phys. 54, 1091 (2004). Article ADS Google Scholar Ozdemir, S. K., Rotter, S., ...
Periodically driven non-Hermitian quantum systems have become the center of interest in recent years due to their rich physical phenomena. In this work, we
This surprising fact has been used to challenge the interpretation of various transport experiments in terms of Majorana zero modes. Here we show that the Andreev versus Majorana controversy is clarified when framed in the language of non-Hermitian topology, the natural description for quantum systems...
These non-Hermitian degeneracies with propagating modes, which to date were realized by balancing energy gain and loss in systems with parity-time symmetry, are reported here in a purely elastic setting. We show that the laminate exhibits metamaterial features near these points, such as ...
Specifically, we analyze chiral symmetric correlated systems in equilibrium where the non-Hermitian phenomena are induced by the finite lifetime of quasiparticles. Intriguingly, our analysis reveals that the combination of symmetry and nonHermiticity results in topological degeneracies of ...
[041]Eigenfunctions of a Hermitian operator.zh_en 13:06 [042]Completeness of eigenvectors and measurement postulate.zh_en 16:56 [043]Consistency condition. Particle on a circle.zh_en 17:45 [044]Defining uncertainty.zh_en 10:31 [045]Uncertainty and eigenstates.zh_en ...
D Mukherjee,CG Sonwane,MR Zachariah - 《Journal of Chemical Physics》 被引量: 65发表: 2003年 Signatures of three coalescing eigenfunctions Parameter-dependent non-Hermitian quantum systems typically not only possess eigenvalue degeneracies, but also degeneracies of the corresponding eigenfunct... Gilles...
Dynamically encircling exceptional points (EPs) in non-Hermitian systems has attracted considerable attention recently, but all previous studies focused on two-state systems, and the dynamics in more complex multi-state systems is yet to be investigated.