Zobrazeno 1 - 10
of 21 722
pro vyhledávání: '"Topological invariants"'
Autor:
Boos, Jens
Potentials arising in ultraviolet-completed field theories can be devoid of singularities, and hence render spacetimes simply connected. This challenges the notion of topological invariants considered in such scenarios. We explore the classical impli
Externí odkaz:
http://arxiv.org/abs/2411.11450
Autor:
Stoiber, Tom
Topological phases of gapped one-particle Hamiltonians with (anti)-unitary symmetries are classified by strong topological invariants according to the Altland-Zirnbauer table. Those indices are still well-defined in the regime of strong disorder when
Externí odkaz:
http://arxiv.org/abs/2410.22214
Autor:
Lin, Xiao-Dong, Zhang, Long
While non-Hermitian (NH) topological phases and phenomena have been observed across various quantum systems, directly measuring NH topological invariants remains a significant challenge. In this study, we present a generic and unified framework for t
Externí odkaz:
http://arxiv.org/abs/2410.13241
We show that Hall conductance and its non-abelian and higher-dimensional analogs are obstructions to promoting a symmetry of a state to a gauge symmetry. To do this, we define a local Lie algebra over a Grothendieck site as a pre-cosheaf of Lie algeb
Externí odkaz:
http://arxiv.org/abs/2410.19287
This work introduces a general theoretical framework, which expresses the topological invariants of two-dimensional Floquet systems in terms of tractable response functions: Building on the Sambe representation of periodically-driven systems, and ins
Externí odkaz:
http://arxiv.org/abs/2408.13576
Periodically driven systems offer a perfect breeding ground for out-of-equilibrium engineering of topological boundary states at zero energy ($0$-mode), as well as finite energy ($\pi$-mode), with the latter having no static analog. The Floquet opera
Externí odkaz:
http://arxiv.org/abs/2408.08548
Autor:
Chen, Zhao-Xian, Zhang, Yuan-hong, Sun, Xiao-Chen, Zhang, Ruo-Yang, Tang, Jiang-Shan, Yang, Xin, Zhu, Xue-Feng, Lu, Yan-Qing
Mathematically, topological invariants arise from the parallel transport of eigenstates on the energy bands, which, in physics, correspond to the adiabatic dynamical evolution of transient states. It determines the presence of boundary states, while
Externí odkaz:
http://arxiv.org/abs/2408.02984
Autor:
Fu, Bo, Shen, Shun-Qing
The half-quantized Hall phase represents a unique metallic or semi-metallic state of matter characterized by a fractional quantum Hall conductance, precisely half of an integer $\nu$ multiple of $e^{2}/h$. Here we demonstrate the existence of a novel
Externí odkaz:
http://arxiv.org/abs/2409.15655
Autor:
Zhang, Jing
EBR is considered the building block in TQC and fundamental concept in SI methods. One of the hypophysis is that a fully occupied EBR has zero Berry-Wilczek-Zee phase and those occupied corresponds to trivial topology. Associated with it are the conc
Externí odkaz:
http://arxiv.org/abs/2408.16658