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We have developed an efficient computational method to treat long, one-dimensional systems of strongly-interacting atoms forming self-assembled spin chains. Such systems can be used to realize many spin chain model Hamiltonians tunable by…

量子物理 · 物理学 2016-04-19 N. J. S. Loft , O. V. Marchukov , D. Petrosyan , N. T. Zinner

We present an $O(\log d + \log\log_{m/n} n)$-time randomized PRAM algorithm for computing the connected components of an $n$-vertex, $m$-edge undirected graph with maximum component diameter $d$. The algorithm runs on an ARBITRARY CRCW…

数据结构与算法 · 计算机科学 2021-04-22 S. Cliff Liu , Robert E. Tarjan , Peilin Zhong

We present a general form of the effective spin-chain model for strongly interacting atomic gases with an arbitrary spin in the one-dimensional(1D) traps. In particular, for high-spin systems the atoms can collide in multiple scattering…

量子气体 · 物理学 2016-01-27 Lijun Yang , Xiaoling Cui

We present a new high-performance configuration interaction code optimally designed for the calculation of the lowest energy eigenstates of a few electrons in semiconductor quantum dots (also called artificial atoms) in the strong…

强关联电子 · 物理学 2007-05-23 Massimo Rontani , Carlo Cavazzoni , Devis Bellucci , Guido Goldoni

We propose an efficient method to compute a small set of integer-constrained cone singularities, which induce a rotationally seamless conformal parameterization with low distortion. Since the problem only involves discrete variables, i.e.,…

图形学 · 计算机科学 2025-12-25 Wei Du , Qing Fang , Ligang Liu , Xiao-Ming Fu

This paper presents an adaptive convolutional neural network (CNN) architecture that can automate diverse topology optimization (TO) problems having different underlying physics. The architecture uses the encoder-decoder networks with dense…

计算工程、金融与科学 · 计算机科学 2025-09-10 Khaish Singh Chadha , Prabhat Kumar

This paper discusses a numerical method for computing the evolution of large interacting system of quantum particles. The idea of the random batch method is to replace the total interaction of each particle with the $N-1$ other particles by…

偏微分方程分析 · 数学 2019-12-17 François Golse , Shi Jin , Thierry Paul

With the increasing use of nonlinear devices in both generation and consumption of power, it is essential that we develop accurate and quick control for active filters to suppress harmonics. Time delays between input and output are…

系统与控制 · 电气工程与系统科学 2024-10-04 Dixant Bikal Sapkota , Puskar Neupane , Kajal Pokharel , Shahabuddin Khan

Monte Carlo methods are widely used in particle physics to integrate and sample probability distributions (differential cross sections or decay rates) on multi-dimensional phase spaces. We present a Neural Network (NN) algorithm optimized…

高能物理 - 唯象学 · 物理学 2020-10-21 Matthew D. Klimek , Maxim Perelstein

This paper presents a convolutional neural network (CNN) which can be used for forecasting electricity load profiles 36 hours into the future. In contrast to well established CNN architectures, the input data is one-dimensional. A parameter…

机器学习 · 计算机科学 2019-11-27 Christian Lang , Florian Steinborn , Oliver Steffens , Elmar W. Lang

In this paper the efficient space virtualisation for Hoshen--Kopelman algorithm is presented. We observe minimal parallel overhead during computations, due to negligible communication costs. The proposed algorithm is applied for computation…

计算物理 · 物理学 2019-08-21 M. Kotwica , P. Gronek , K. Malarz

Cosmological perturbation theory is a powerful tool to predict the statistics of large-scale structure in the weakly non-linear regime, but even at 1-loop order it results in computationally expensive mode-coupling integrals. Here we…

宇宙学与河外天体物理 · 物理学 2017-02-17 Xiao Fang , Jonathan A. Blazek , Joseph E. McEwen , Christopher M. Hirata

We construct fast algorithms for evaluating transforms associated with families of functions which satisfy recurrence relations. These include algorithms both for computing the coefficients in linear combinations of the functions, given the…

计算工程、金融与科学 · 计算机科学 2025-10-20 Mark Tygert

We study an interacting system of $N$ classical particles on a line at thermal equilibrium. The particles are confined by a harmonic trap and repelling each other via pairwise interaction potential that behaves as a power law $\propto…

One of quantum physics' fundamental, but largely unsolved, problems is the computation of the correlation functions in many-body systems. In this paper we address this problem in the case of one-dimensional spinor gases with repulsive…

量子气体 · 物理学 2024-11-12 Ovidiu I. Patu

This paper addresses the numerical computation of critical angles between two convex cones in finite-dimensional Euclidean spaces. We present a novel approach to computing these critical angles by reducing the problem to finding stationary…

最优化与控制 · 数学 2023-10-03 Welington de Oliveira , Valentina Sessa , David Sossa

We present a controlled method for computing the exchange coupling in correlated one-dimensional electron systems based on the relation between the exchange constant and the pair-correlation function of spinless electrons. This relation is…

强关联电子 · 物理学 2007-05-23 Michael M. Fogler , Eugene Pivovarov

We describe the properties of complex nuclei, such as the Sn isotopes with mass numbers A = 100 - 132, in terms of the free nucleon--nucleon interaction as obtained from meson--exchange theory. This amounts to first calculating an effective…

核理论 · 物理学 2007-05-23 T. Engeland , M. Hjorth-Jensen , A. Holt , E. Osnes

We propose a method to achieve scalable quantum computation based on fast quantum gates on an array of trapped ions, without the requirement of ion shuttling. Conditional quantum gates are obtained for any neighboring ions through…

量子物理 · 物理学 2009-11-10 L. -M. Duan

We propose a scalable quantum-computing architecture based on cold atoms confined to sites of a tight optical lattice. The lattice is placed in a non-uniform magnetic field and the resulting Zeeman sublevels define qubit states. Microwave…

量子物理 · 物理学 2009-11-10 Andrei Derevianko , Caleb C. Cannon