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A wave-packet time evolution method, based on the split-operator technique, is developed to investigate the scattering of quasi-particles at a normal-superconductor interface of arbitrary profile and shape. As a practical application, we…

介观与纳米尺度物理 · 物理学 2020-09-18 F. J. A. Linard , V. N. Moura , L. Covaci , M. V. Milošević , A. Chaves

The decomposition of a quasi-abelian code into shorter linear codes over larger alphabets was given in (Jitman, Ling, (2015)), extending the analogous Chinese remainder decomposition of quasi-cyclic codes (Ling, Sol\'e, (2001)). We give a…

信息论 · 计算机科学 2019-03-27 Martino Borello , Cem Güneri , Elif Saçıkara , Patrick Solé

We introduce a construction to embed a quasiperiodic lattice of obstacles into a single unit cell of a higher-dimensional space, with periodic boundary conditions. This construction transparently shows the existence of channels in these…

混沌动力学 · 物理学 2012-06-12 Atahualpa S. Kraemer , David P. Sanders

Using molecular dynamics simulations, we study computational self-assembly of one-component three-dimensional dodecagonal (12-fold) quasicrystals in systems with two-length-scale potentials. Existing criteria for three-dimensional…

材料科学 · 物理学 2017-05-04 Roman Ryltsev , Nikolay Chtchelkatchev

Quasipatterns (two-dimensional patterns that are quasiperiodic in any spatial direction) remain one of the outstanding problems of pattern formation. As with problems involving quasiperiodicity, there is a small divisor problem. In this…

斑图形成与孤子 · 物理学 2019-10-03 G. Iooss , A. M. Rucklidge

Clustering mixtures of Gaussian distributions is a fundamental and challenging problem that is ubiquitous in various high-dimensional data processing tasks. While state-of-the-art work on learning Gaussian mixture models has focused…

机器学习 · 计算机科学 2018-03-05 Dan Kushnir , Shirin Jalali , Iraj Saniee

We use circle-packing methods to generate quadrilateral meshes for polygonal domains, with guaranteed bounds both on the quality and the number of elements. We show that these methods can generate meshes of several types: (1) the elements…

计算几何 · 计算机科学 2007-05-23 Marshall Bern , David Eppstein

This paper describes how one can use four standing wave laser fields to realize a two dimensional optical quasicrystal with eight-fold symmetry, closely related to the well-known octagonal or Ammann-Beenker tiling quasicrystal. We describe…

量子气体 · 物理学 2023-07-19 Anuradha Jagannathan , Michel Duneau

We study the convergence of two of the most widely used and intuitive approaches for computing the spectra of differential operators with quasiperiodic coefficients: the supercell method and the superspace method. In both cases,…

谱理论 · 数学 2024-11-26 Bryn Davies , Clemens Thalhammer

Linear quasi-cyclic product codes over finite fields are investigated. Given the generating set in the form of a reduced Gr{\"o}bner basis of a quasi-cyclic component code and the generator polynomial of a second cyclic component code, an…

信息论 · 计算机科学 2015-01-27 Alexander Zeh , San Ling

Quasicrystals are aperiodically ordered solids that exhibit long-range order without translational periodicity, bridging the gap between crystalline and amorphous materials. Due to their lack of translational periodicity, information on…

材料科学 · 物理学 2025-03-10 Tano Kim Kender , Marco Corrias , Cesare Franchini

Aperiodic (quasicrystalline) tilings, such as Penrose's tiling, can be built up from e.g. kites and darts, squares and equilateral triangles, rhombi or shield shaped tiles and can have a variety of different symmetries. However, almost all…

软凝聚态物质 · 物理学 2022-10-17 Andrew J. Archer , Tomonari Dotera , Alastair M. Rucklidge

The present paper deals with the possibility of creation of the quantum computer in which the role of q-bits is played by quasi-particles. In such a computer, the elementary computation block should represent a cluster created on the basis…

量子物理 · 物理学 2011-03-16 V. K. Voronov

Using a recently developed method to simulate percolation on large clusters of distributed machines [N. R. Moloney and G. Pruessner, Phys. Rev. E 67, 037701 (2003)], we have numerically calculated crossing, spanning and wrapping…

统计力学 · 物理学 2007-05-23 Gunnar Pruessner , Nicholas R. Moloney

We propose quasiperiodic heterostructures associated with the tessellations of the unit disk by regular hyperbolic triangles. We present explicit construction rules and explore some of the properties exhibited by these geometric-based…

统计力学 · 物理学 2008-07-17 A. G. Barriuso , J. J. Monzon , L. L. Sanchez-Soto , A. F. Costa

We show that the method of stochastic reduction of linear superpositions can be applied to the process of disentanglement for the spin-0 state of two spin-1/2 particles. We describe the geometry of this process in the framework of the…

量子物理 · 物理学 2007-05-23 Ari Belenkiy , Steve Shnider , Lawrence Horwitz

Granular packings of non-convex or elongated particles can form free-standing structures like walls or arches. For some particle shapes, such as staples, the rigidity arises from interlocking of pairs of particles, but the origins of…

软凝聚态物质 · 物理学 2020-07-06 Yuchen Zhao , Jonathan Barés , Joshua E. S. Socolar

This paper presents a point-wise divergence-free projection method for numerical approximations of photonic quasicrystals problems. The original three-dimensional quasiperiodic Maxwell's system is transformed into a periodic one in higher…

数值分析 · 数学 2024-09-10 Zixuan Gao , Zhenli Xu , Zhiguo Yang

This paper introduces hierarchical quasi-clustering methods, a generalization of hierarchical clustering for asymmetric networks where the output structure preserves the asymmetry of the input data. We show that this output structure is…

机器学习 · 计算机科学 2014-04-21 Gunnar Carlsson , Facundo Mémoli , Alejandro Ribeiro , Santiago Segarra

We consider the quasiconformal dilatation of projective transformations of the real projective plane. For non-affine transformations, the contour lines of dilatation form a hyperbolic pencil of circles, and these are the only circles that…

复变函数 · 数学 2017-04-04 Stefan Born , Ulrike Bücking , Boris Springborn