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The recently proposed projection quantization, which is a method to quantize particular subspaces of systems with known quantum theory, is shown to yield a genuine quantization in several cases. This may be inferred from exact results…

量子物理 · 物理学 2009-10-31 Martin Bojowald , Thomas Strobl

We present a unified theoretical and computational framework that bridges mathematical quasiperiodicity with classical crystallographic models. Based on a rigorous cut-and-projection construction, the proposed proximal coincidence point set…

材料科学 · 物理学 2026-03-24 Suining Xiong , Wenwen Zou , Pingwen Zhang , Kai Jiang

We identify effective models for thin, linearly elastic and perfectly plastic plates exhibiting a microstructure resulting from the periodic alternation of two elastoplastic phases. We study here both the case in which the thickness of the…

偏微分方程分析 · 数学 2023-03-01 Marin Bužančić , Elisa Davoli , Igor Velčić

This paper continues our study of quasicrystals initiated in Part I. We propose a general mechanism for constructing quasicrystals, existing globally in time, in spatially-extended systems (partial differential equations with Euclidean…

动力系统 · 数学 2025-01-31 Ian Melbourne , Jens Rademacher , Bob Rink , Sergey Zelik

We study the electronic properties of a two-dimensional quasiperiodic tiling, the isometric generalized Rauzy tiling, embedded in a magnetic field. Its energy spectrum is computed in a tight-binding approach by means of the recursion…

无序系统与神经网络 · 物理学 2007-05-23 J. Vidal , R. Mosseri

We analyse a problem of two-dimensional linearised elasticity for a two-component periodic composite, where one of the components consists of disjoint soft inclusions embedded in a rigid framework. We consider the case when the contrast…

数学物理 · 物理学 2018-11-06 Kirill D. Cherednichenko , James A. Evans

In the framework of linearized elasticity, we study thin elastic composite plates with thickness $\delta$. The plates contain small, rigid rectangular plates distributed periodically along $\varepsilon$. Between two neighboring rigid plates…

偏微分方程分析 · 数学 2025-12-02 Amartya Chakrabortty , Georges Griso , Julia Orlik

We study the projection of an element of fractional Gaussian noise onto its neighbouring elements. We prove some analytic results for the coefficients of this projection, in particular, we obtain recurrence relations for them. We also make…

概率论 · 数学 2022-09-07 Yuliya Mishura , Kostiantyn Ralchenko , René L. Schilling

We present a formulation for high-order generalized periodicity conditions in the context of a high-order electromechanical theory including flexoelectricity, strain gradient elasticity and gradient dielectricity, with the goal of studying…

数值分析 · 数学 2023-11-15 J. Barceló-Mercader , D. Codony , A. Mocci , I. Arias

A class of quasilinear singularly perturbed boundary value problems with a turning point of attractive type is considered. The problems are solved numerically by a finite-difference scheme on a special discretization mesh which is dense…

数值分析 · 数学 2015-04-21 Relja Vulanović

Porous polymeric covalent organic frameworks (COFs) have been under intense synthetic investigation with over 100 unique structural motifs known. In order to realize the true potential of these materials, converting the powders into thin…

This paper addresses the periodic homogenization of quasilinear elliptic PDEs in a two-component domain with an interfacial thermal barrier. It introduces a periodic extension operator that ensures strong convergence of function sequences…

偏微分方程分析 · 数学 2026-01-21 Rodolfo E. Maza

In this work, we reconsider the study of 2D materials involving double lattice structures associated with periodic polygons. In tessellated periodic representation, it appears two periodic polygons of $k$ sides of unequal side lengths at…

材料科学 · 物理学 2019-05-30 Adil Belhaj , Salah Eddine Ennadifi

Cut and project sets are obtained by projecting an irrational slice through a lattice to a lower dimensional subspace. Under standard conditions, the resulting pattern has no translational periods even though it retains some regularity of…

动力系统 · 数学 2025-12-16 Edmund Harriss , Henna Koivusalo , James J. Walton

We investigate the effective properties (conductivity, diffusivity and elastic moduli) of model random composite media derived from Gaussian random fields and overlapping hollow spheres. The morphologies generated in the models exhibit low…

无序系统与神经网络 · 物理学 2009-10-31 Anthony Roberts , Mark Knackstedt

I examine quantum mechanical Hamiltonians with partial supersymmetry, and explore two main applications. First, I analyze a theory with a logarithmic spectrum, and show how to use partial supersymmetry to reveal the underlying structure of…

量子物理 · 物理学 2008-11-26 Donald Spector

We study the cohomology and hence $K$-theory of the aperiodic tilings formed by the so called 'cut and project' method, i.e., patterns in $d$ dimensional Euclidean space which arise as sections of higher dimensional, periodic structures.…

K理论与同调 · 数学 2016-01-20 Franz Gaehler , John Hunton , Johannes Kellendonk

We introduce computable projection operators onto piecewise polynomial spaces, defined via sampling and discrete least-squares polynomial approximations. The resulting mappings exhibit (almost) optimal approximation properties in $L^2$ and…

数值分析 · 数学 2026-02-05 Johannes Storn

The development of fault-tolerant quantum computers based on superconducting circuits faces critical challenges in qubit coherence, connectivity, and scalability. This review establishes metamaterials, artificial structures with on-demand…

量子物理 · 物理学 2025-06-26 Alex Krasnok

In past decades the scientific community has been looking for a reliable first-principles method to predict the electronic structure of solids with high accuracy. Here we present an approach which we call the quasiparticle self-consistent…

材料科学 · 物理学 2009-11-11 M. van Schilfgaarde , T. Kotani , S. Faleev