Results 11 to 20 of about 1,172,695 (320)

Strayfield calculation for micromagnetic simulations using true periodic boundary conditions [PDF]

Scientific Reports, 2021
We present methods for calculating the strayfield in finite element and finite difference micromagnetic simulations using true periodic boundary conditions. In contrast to pseudo periodic boundary conditions, which are widely used in micromagnetic codes,
Florian Bruckner, Amil Ducevic, Paul Heistracher, Claas Abert, Dieter Suess   +4 more
doaj   +3 more sources

Koopmans Spectral Functionals in Periodic Boundary Conditions [PDF]

Journal of Chemical Theory and Computation, 2022
Koopmans spectral functionals aim to describe simultaneously ground state properties and charged excitations of atoms, molecules, nanostructures and periodic crystals. This is achieved by augmenting standard density functionals with simple but physically motivated orbital-density-dependent corrections.
Nicola Colonna, Riccardo De Gennaro, Edward Linscott, Nicola Marzari   +3 more
openaire   +4 more sources

Periodic boundary conditions on the pseudosphere [PDF]

Journal of Physics A: Mathematical and Theoretical, 2007
We provide a framework to build periodic boundary conditions on the pseudosphere (or hyperbolic plane), the infinite two-dimensional Riemannian space of constant negative curvature.
Alimohammadi M, Anglès d'Auriac J C, Baek S K, Beardon A F, Belo L R A Oliveira-Neto N M Moura-Melo W A Pereira A R Ercolessi E, Birrel N B, Comtet A, Coxeter H S M, Coxeter H S M, Doyon B, F Sausset, Frenkel D, G Tarjus, Giomi L Bowick M J, Hansen J P, Hasegawa I Sakaniwa Y Shima H, Hilbert D, Klein F, Kléman M, Landau D P, Magnus W, Nakahara M, Nechaev S, Nelson D R, Poincaré H, Rietman R, Sadoc J-F, Sausset F Tarjus G Viot P, Shima H, Shima H, Tarjus G, Ueda K Krcmar R Gendiar A Nishino T, Yuncken R   +32 more
core   +4 more sources

Periodic boundary conditions for arbitrary deformations in molecular dynamics simulations

Journal of Computational Physics, 2021
A generalization of the Lees-Edwards periodic boundary conditions (gLE-PBC) for molecular dynamics (MD) simulations is developed to allow for arbitrary deformations to be applied to the domain.
Paul L. Barclay, D. Zhang
semanticscholar   +3 more sources

Fredholm property of nonlocal problems for integro-differential hyperbolic systems [PDF]

Electronic Journal of Qualitative Theory of Differential Equations, 2016
The paper concerns nonlocal time-periodic boundary value problems for first-order integro-differential hyperbolic systems with boundary inputs. The systems are subjected to integral boundary conditions.
Irina Kmit, Roman Klyuchnyk
doaj   +4 more sources

DBSCAN in Domains with Periodic Boundary Conditions

Journal of Open Research Software
Many scientific problems involve data that is embedded in a space with periodic boundary conditions. For instance, this can be related to an inherent cyclic or rotational symmetry in the data or a spatially extended periodicity. When analyzing such data,
Xander M. de Wit, Alessandro Gabbana
doaj   +3 more sources

Quantum Transport Calculations Using Periodic Boundary Conditions

, 2004
An efficient new method is presented to calculate the quantum transports using periodic boundary conditions. This method allows the use of conventional ground state ab initio programs without big changes. The computational effort is only a few times of a
K. Hirose, Lin-Wang Wang
core   +3 more sources

Localization aligned weakly periodic boundary conditions [PDF]

International Journal for Numerical Methods in Engineering, 2017
SummaryWhen computing the homogenized response of a representative volume element (RVE), a popular choice is to impose periodic boundary conditions on the RVE. Despite their popularity, it is well known that standard periodic boundary conditions lead to inaccurate results if cracks or localization bands in the RVE are not aligned with the periodicity ...
Svenning, Erik, Fagerström, Martin, Larsson, Fredrik   +2 more
openaire   +2 more sources

Pseudoergodic operators and periodic boundary conditions

Mathematics of Computation, 2019
There is an increasing literature on random non self-adjoint infinite matrices with motivations ranging from condensed matter physics to neural networks. Many of these operators fall into the class of ``pseudoergodic'' operators, which allows the elimination of probabilistic arguments when studying spectral properties. Parallel to this is the increased
Matthew J. Colbrook
openaire   +2 more sources

Tunneling in cosine potential with periodic boundary conditions [PDF]

Acta Physica Polonica B, 2013
In this paper we discuss three methods to calculate energy splitting in cosine potential on a circle, Bloch waves, semi--classical approximation and restricted basis approach.
Ambrozinski, Zbigniew
core   +6 more sources