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A new Monte Carlo algorithm for 2-dimensional spin glasses is presented. The use of clusters makes possible global updates and leads to a gain in speed of several orders of magnitude. As an example, we study the 2-dimensional +/-J…

无序系统与神经网络 · 物理学 2009-11-07 J. Houdayer

The stability and melting transition of a single layer and a bilayer crystal consisting of charged particles interacting through a Coulomb or a screened Coulomb potential is studied using the Monte-Carlo technique. A new melting criterion…

强关联电子 · 物理学 2016-08-31 I. V. Schweigert , V. A. Schweigert , F. M. Peeters

Determinations of structure functions and parton distribution functions have been recently obtained using Monte Carlo methods and neural networks as universal, unbiased interpolants for the unknown functional dependence. In this work the…

高能物理 - 唯象学 · 物理学 2009-11-18 Luigi Del Debbio , Alberto Guffanti , Andrea Piccione

Bayesian data analysis is widely used across many disciplines, and representative examples in materials science include spectral analysis and sparse modeling. In such applications, the underlying models often become complex and yield…

信息论 · 计算机科学 2026-03-04 Tomohiro Nabika , Kenji Nagata , Shun Katakami , Masaichiro Mizumaki , Masato Okada

Many problems in materials science and biology involve particles interacting with strong, short-ranged bonds, that can break and form on experimental timescales. Treating such bonds as constraints can significantly speed up sampling their…

数值分析 · 数学 2020-12-02 Miranda Holmes-Cerfon

Detection of crystal structures from particle positions of crystalline assemblies formed in computer simulations is an unsolved problem. The standard protocol, formulated in the reciprocal space, for structure determination from…

材料科学 · 物理学 2025-04-29 Sumitava Kundu , Kaustav Chakraborty , Avisek Das

A high-accuracy solution of the diffraction problem has become necessary for the treatment of certain special questions of statistical physics. This article reports the creation of a computer program that serves as an instrumental method of…

光学 · 物理学 2013-08-30 Vladimir V. Savukov , Igor V. Golubenko

I show how to construct Monte Carlo algorithms (programs), prove that they are correct and document them. Complicated algorithms are build using a handful of elementary methods. This construction process is transparently illustrated using…

计算物理 · 物理学 2007-05-23 S. Jadach

A new algorithm for Monte Carlo calculation of the double exchange model is studied. The algorithm is commonly applicable to wide classes of strongly correlated electron systems which involve itinerant electrons coupled with…

强关联电子 · 物理学 2009-11-07 Nobuo Furukawa , Yukitoshi Motome , Hisaho Nakata

We propose a new Monte Carlo method called the pinhole trace algorithm for {\it ab initio} calculations of the thermodynamics of nuclear systems. For typical simulations of interest, the computational speedup relative to conventional…

The peculiarities of phase states of the triplet boson model for orthonickelates are investigated analytically and by means of numerical simulations. The conditions of thermodynamic stability of homogeneous phases are found. It is shown…

统计力学 · 物理学 2024-12-16 Yu. D. Panov , S. V. Nuzhin , V. S. Ryumshin , A. S. Moskvin

Computer simulation plays a central role in modern day materials science. The utility of a given computational approach depends largely on the balance it provides between accuracy and computational cost. Molecular crystals are a class of…

We show how information on the uniformity properties of a point set employed in numerical multidimensional integration can be used to improve the error estimate over the usual Monte Carlo one. We introduce a new measure of (non-)uniformity…

高能物理 - 唯象学 · 物理学 2009-10-28 Jiri Hoogland , Ronald Kleiss

This paper proposes a new theory and methodology to tackle the problem of unifying distributed analyses and inferences on shared parameters from multiple sources, into a single coherent inference. This surprisingly challenging problem…

统计方法学 · 统计学 2019-07-22 Hongsheng Dai , Murray Pollock , Gareth Roberts

We propose a Multi-Cell Monte Carlo algorithm, or (MC)^2, for predicting stable phases in chemically complex crystalline systems. Free atomic transfer among cells is achieved via the application of the lever rule, where an assigned molar…

材料科学 · 物理学 2018-11-13 Changning Niu , You Rao , Wolfgang Windl , Maryam Ghazisaeidi

This paper describes an algorithm for selecting parameter values (e.g. temperature values) at which to measure equilibrium properties with Parallel Tempering Monte Carlo simulation. Simple approaches to choosing parameter values can lead to…

其他凝聚态物理 · 物理学 2015-05-18 Firas Hamze , Neil Dickson , Kamran Karimi

Auxiliary variable methods such as the Parallel Tempering and the cluster Monte Carlo methods generate samples that follow a target distribution by using proposal and auxiliary distributions. In sampling from complex distributions, these…

统计计算 · 统计学 2012-07-16 Takamitsu Araki , Kazushi Ikeda

We present results of Monte-Carlo simulations for finite 2D single and bilayer systems. Strong Coulomb correlations lead to arrangement of particles in configurations resembling a crystal lattice. For binary layers, there exists a…

介观与纳米尺度物理 · 物理学 2015-06-24 A. V. Filinov , M. Bonitz , Yu. E. Lozovik

We introduce a phase-field crystal model that creates an array of complex three- and two-dimensional crystal structures via a numerically tractable three-point correlation function. The three-point correlation function is designed in order…

材料科学 · 物理学 2017-11-15 Eli Alster , David Montiel , Katsuyo Thornton , Peter W. Voorhees

We use a path integral quantum Monte Carlo method to simulate excitons and biexcitons in core shell nanocrystals with Type-I, II and quasi-Type II band alignments. Quantum Monte Carlo techniques allow for all quantum correlations to be…

介观与纳米尺度物理 · 物理学 2015-06-05 Peter G. McDonald , Edward J. Tyrrell , John Shumway , Jason M. Smith , Ian Galbraith