Results 81 to 90 of about 34,413 (249)

Super-diffusion in one-dimensional quantum lattice models

, 2018
We identify a class of one-dimensional spin and fermionic lattice models which display diverging spin and charge diffusion constants, including several paradigmatic models of exactly solvable strongly correlated many-body dynamics such as the isotropic ...
De Nardis, Jacopo, Ilievski, Enej, Medenjak, Marko, Prosen, Tomaž   +3 more
core   +3 more sources

What is an integrable quench?

Nuclear Physics B, 2017
Inspired by classical results in integrable boundary quantum field theory, we propose a definition of integrable initial states for quantum quenches in lattice models.
Lorenzo Piroli, Balázs Pozsgay, Eric Vernier   +2 more
doaj   +1 more source

Rafting of Ni‐Based Superalloys Under Multiaxial Load as Understood by Phase‐Field Simulations and Critical Experiments

Advanced Engineering Materials, EarlyView.
Phase‐field simulations coupled with dislocation‐density‐based crystal plasticity modeling reproduce γ′ rafting behavior in single‐crystal Ni‐based superalloys under varied loading conditions. The model captures both macroscopic creep and microscopic morphology evolution, with results matching high‐temperature creep experiments.
Micheal Younan, David Bürger, Gunther Eggeler, Oleg Shchyglo, Ingo Steinbach, Muhammad Adil Ali   +5 more
wiley   +1 more source

Phase Field Failure Modeling: Brittle‐Ductile Dual‐Phase Microstructures under Compressive Loading

Advanced Engineering Materials, EarlyView.
The approach by Amor and the approach by Miehe and Zhang for asymmetric damage behavior in the phase field method for fracture are compared regarding their fitness for microcrack‐based failure modeling. The comparison is performed for the case of a dual‐phase microstructure with a brittle and a ductile constituent.
Jakob Huber, Jan Torgersen, Ewald Werner
wiley   +1 more source

Exact finite volume expectation values of Ψ ¯ Ψ $$ \overline{\varPsi}\varPsi $$ in the massive Thirring model from light-cone lattice correlators

Journal of High Energy Physics, 2018
In this paper, using the light-cone lattice regularization, we compute the finite volume expectation values of the composite operator Ψ ¯ Ψ $$ \overline{\varPsi}\varPsi $$ between pure fermion states in the Massive Thirring Model.
Árpád Hegedűs
doaj   +1 more source

Robust Spot Melting by 3D Spot Arrangements in Electron Beam Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
This work proposes an approach to replace separately melted contours for spot melting in electron beam powder fusion. Adapting the spot arrangements close to the contour combined with stacking yields a comparable surface quality without the inherent challenges of separate contours, as demonstrated, by electron optical images and roughness measurements.
Tobias Kupfer, Lukas Spano, Sebastian Pohl, Carolin Körner, Matthias Markl   +4 more
wiley   +1 more source

Integrable SU(m|n) supersymmetric electronic models of strong correlations

, 1996
We generalize the SU(2|2) supersymmetric extended Hubbard model of 1/r2 interaction to the SU(m|n) supersymmetric case. Integrable models may be defined on both uniform lattice and non-uniform one dimensional lattices.
Liu, James T., Wang, D. F.
core   +1 more source

Boundary overlaps from Functional Separation of Variables

Journal of High Energy Physics
In this paper we show how the Functional Separation of Variables (FSoV) method can be applied to the problem of computing overlaps with integrable boundary states in integrable systems.
Simon Ekhammar, Nikolay Gromov, Paul Ryan   +2 more
doaj   +1 more source

Lattice approach to finite volume form-factors of the Massive Thirring (Sine-Gordon) model

Journal of High Energy Physics, 2017
In this paper we demonstrate, that the light-cone lattice approach for the Massive-Thirring (sine-Gordon) model, through the quantum inverse scattering method, admits an appropriate framework for computing the finite volume form-factors of local ...
Árpád Hegedűs
doaj   +1 more source

Multimodal Data‐Driven Microstructure Characterization

Advanced Engineering Materials, EarlyView.
A self‐consistent autonomous workflow for EBSP‐based microstructure segmentation by integrating PCA, GMM clustering, and cNMF with information‐theoretic parameter selection, requiring no user input. An optimal ROI size related to characteristic grain size is identified.
Qi Zhang, Santiago Benito, Özge Özgün, Sebastian Weber, Markus Stricker   +4 more
wiley   +1 more source