Zobrazeno 1 - 10
of 55 148
pro vyhledávání: '"Winding P"'
Publikováno v:
MIS Quarterly; Dec2024, Vol. 48 Issue 4, p1721-1744, 24p, 5 Color Photographs
Many systems are topologically trivial in the bulk, but still have non-trivial wavefunctions locally in the Brillouin zone. For example, in a small-gap Dirac material the Berry curvature is strongly peaked, but cancels over the full Brillouin zone, w
Externí odkaz:
http://arxiv.org/abs/2412.13042
Autor:
Morikawa, Okuto, Suzuki, Hiroshi
We propose a simple numerical method which computes an approximate value of the winding number of a mapping from 3D torus~$T^3$ to the unitary group~$U(N)$, when $T^3$ is approximated by discrete lattice points. Our method consists of a ``tree-level
Externí odkaz:
http://arxiv.org/abs/2412.03888
The winding number is the topological invariant that classifies chiral symmetric Hamiltonians with one-dimensional parametric dependence. In this work we complete our study of the winding number statistics in a random matrix model belonging to the ch
Externí odkaz:
http://arxiv.org/abs/2410.22808
Nonlinear Hall-like currents can be generated by a time-periodic alternating bias on two-dimensional (2D) materials lacking inversion symmetry. To hint that the moir\'e between graphene and its supporting substrate contributes to the homogeneity of n
Externí odkaz:
http://arxiv.org/abs/2412.10584
The interplay between topological localization and non-Hermiticity localization in non-Hermitian crystal systems results in a diversity of shapes of topological edge modes (EMs), offering opportunities to manipulate these modes for potential topologi
Externí odkaz:
http://arxiv.org/abs/2409.03275
Autor:
Chen, Wen-Xiang
This paper explores the advanced mathematical frameworks used to analyze symmetry breaking in high-dimensional field theories, emphasizing the roles of Laurent series, residues, and winding numbers. Symmetry breaking is fundamental in various physica
Externí odkaz:
http://arxiv.org/abs/2409.08294
Autor:
Martens, Cedric, Bessmeltsev, Mikhail
The generalized winding number is an essential part of the geometry processing toolkit, allowing to quantify how much a given point is inside a surface, often represented by a mesh or a point cloud, even when the surface is open, noisy, or non-manifo
Externí odkaz:
http://arxiv.org/abs/2408.04466
Autor:
Estake, Kiran Babasaheb, Roy, Dibyendu
We propose a method to directly probe bulk topological quantum numbers in topological matter by measuring the momentum-space single-particle spectral function (SPSF). Angle-resolved photoemission spectroscopy (ARPES) can detect SPSF and is often used
Externí odkaz:
http://arxiv.org/abs/2407.20550
Autor:
Liang, Gan, Li, Linhu
Complex spectral winding is a topological feature unique in non-Hermitian systems and is known to be responsible for the non-Hermitian skin effect (NHSE), namely, the sign of the spectral winding number predicts the localization direction of skin mod
Externí odkaz:
http://arxiv.org/abs/2407.10069