Results 31 to 40 of about 2,298,010 (344)

Topological boundaries of covariant representations

open access: yesMATHEMATICA SCANDINAVICA, 2023
We associate a boundary $\mathcal B_{\pi ,u}$ to each covariant representation $(\pi ,u,H)$ of a $C^*$-dynamical system $(G,A,\alpha )$ and study the action of $G$ on $\mathcal B_{\pi ,u}$ and its amenability properties. We relate rigidity properties of traces on the associated crossed product $C^*$-algebra to faithfulness of the action of the group on
Amini, Massoud, Zavar, Sajad
openaire   +2 more sources

Recent advances in metasurface design and quantum optics applications with machine learning, physics-informed neural networks, and topology optimization methods [PDF]

open access: yesLight: Science & Applications, 2023
As a two-dimensional planar material with low depth profile, a metasurface can generate non-classical phase distributions for the transmitted and reflected electromagnetic waves at its interface. Thus, it offers more flexibility to control the wave front.
Wenye Ji   +6 more
semanticscholar   +1 more source

Space Boundary Topology Simplification for Building Energy Performance Simulation Speedup

open access: yes, 2020
In recent studies, methodologies for automated Building Energy Performance simulation model generation, utilizing Building Information Model data, have received considerable attention. In most cases, each space of a building is treated as a thermal zone,
G. Lilis   +3 more
semanticscholar   +1 more source

Induced Topological Phases at the Boundary of 3D Topological Superconductors [PDF]

open access: yesPhysical Review Letters, 2015
We present tight-binding models of 3D topological superconductors in class DIII that support a variety of winding numbers. We show that gapless Majorana surface states emerge at their boundary in agreement with the bulk-boundary correspondence.
Peter E. Finch   +3 more
openaire   +4 more sources

Grain-boundary topological phase transitions [PDF]

open access: yesProceedings of the National Academy of Sciences, 2020
Significance We reveal the existence of a topological phase transition (Kosterlitz–Thouless type) in grain boundaries (GBs)—important internal surfaces in crystalline materials. GB dynamics are controlled by the formation/migration of line defects (disconnections) with dislocation and step character. Below the GB KT transition, disconnections
Kongtao Chen   +2 more
openaire   +4 more sources

Topological expansion and boundary conditions [PDF]

open access: yesJournal of High Energy Physics, 2008
In this article, we compute the topological expansion of all possible mixed-traces in a hermitian two matrix model. In other words we give a recipe to compute the number of discrete surfaces of given genus, carrying an Ising model, and with all possible given boundary conditions.
Nicolas Orantin, Bertrand Eynard
openaire   +4 more sources

On the topology of the boundary of a basin of attraction [PDF]

open access: hybridProceedings of the American Mathematical Society, 2007
Suppose φ : M × R ⟶ M \varphi : M \times \mathbb {R} \longrightarrow M is a continuous flow on a locally compact metrizable space M M and K K is an (asymptotically stable) attractor.
J. J. Sánchez-Gabites   +1 more
openalex   +3 more sources

Evidence of topological boundary modes with topological nodal-point superconductivity [PDF]

open access: yesNature Physics, 2021
Raw data of the main text figures. The files can be opened using either MATLAB (*.fig) or Gwyddion (*.gwy).
Haim Beidenkopf   +13 more
openaire   +3 more sources

A precise TIN clipping algorithm for the digital mining design of the opencast coal mine

open access: yesPLoS ONE, 2023
The triangulated irregular network (TIN) clipping algorithm is one of the vital algorithms for the digital mining design of opencast coal mines based on the geological digital elevation model (DEM) described by TIN.
Jingchang Zhao   +3 more
doaj   +2 more sources

Liouvillian skin effect in an exactly solvable model

open access: yesPhysical Review Research, 2022
The interplay between dissipation, topology, and sensitivity to boundary conditions has recently attracted tremendous amounts of attention at the level of effective non-Hermitian descriptions.
Fan Yang   +2 more
doaj   +1 more source

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