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We study a two-dimensional frustrated Heisenberg antiferromagnet on the windmill lattice consisting of triangular and dual honeycomb lattice sites. In the classical ground state the spins on different sublattices are decoupled, but quantum…

强关联电子 · 物理学 2014-03-26 Peter P. Orth , Premala Chandra , Piers Coleman , Jörg Schmalian

This article presents the data-driven equation-free modeling of the dynamics of a hexafloat floating offshore wind turbine based on the application of dynamic mode decomposition (DMD). All the analyses are performed on experimental data…

In this work, we extend the fractional linear multistep methods in [C. Lubich, SIAM J. Math. Anal., 17 (1986), pp.704--719] to the tempered fractional integral and derivative operators in the sense that the tempered fractional derivative…

数值分析 · 数学 2018-12-11 Ling Guo , Fanhai Zeng , Ian Turner , Kevin Burrage , George Em Karniadakis

A thermodynamic theory based on Landau grand potential expansion for ferromagnetic-paramagnetic phase transitions is developed for an electronic phase-separated state. It is rigorously shown that ferromagnetic phase involved in the…

强关联电子 · 物理学 2024-09-30 Petr A. Igoshev , Igor A. Nekrasov

The two-dimensional infinite projected entangled pair states tensor network is evolved in imaginary time with the full update (FU) algorithm to simulate the Shastry-Sutherland model in a magnetic field at finite temperature directly in the…

强关联电子 · 物理学 2021-02-08 Piotr Czarnik , Marek M. Rams , Philippe Corboz , Jacek Dziarmaga

The Hartree-Fock-Bogoliubov (HFB) theory is the starting point for treating superconducting systems. However, the computational cost for solving large scale HFB equations can be much larger than that of the Hartree-Fock equations,…

计算物理 · 物理学 2019-12-24 Lin Lin , Xiaojie Wu

The ground-state magnetic phase diagram is calculated within the Hubbard and $s$-$d$ exchange (Kondo) models for square and simple cubic lattices vs. band filling and interaction parameter. The difference of the results owing to the…

强关联电子 · 物理学 2017-07-11 P. A. Igoshev , M. A. Timirgazin , A. K. Arzhnikov , T. V. Antipin , V. Yu. Irkhin

Refrigeration based on the magnetocaloric effect (MCE) can contribute to energysaving, environmentally friendly cooling in private households, or industrial application. The cooling is based on the reversible heat release or uptake during a…

Motivated by cold atom and ultra-fast pump-probe experiments we study the melting of long-range antiferromagnetic order of a perfect N\'eel state in a periodically driven repulsive Hubbard model. The dynamics is calculated for a Bethe…

Radiation is typically the most time-consuming physical process in numerical models. One solution is to use machine learning methods to simulate the radiation process to improve computational efficiency. From an operational standpoint, this…

机器学习 · 计算机科学 2026-01-21 Hao Jing , Sa Xiao , Haoyu Li , Huadong Xiao , Wei Xue

This paper proposes a computationally efficient simulation strategy for cold thermal energy storage (TES) systems based on phase change material (PCM). Taking as a starting point the recent design of a TES system based on PCM, designed to…

系统与控制 · 电气工程与系统科学 2024-02-07 G. Bejarano , M. Vargas , M. G. Ortega , F. Castaño , J. E. Normey-Rico

In this paper, we analytically investigate the properties of holographic superconductors in higher dimensions in the framework of Born-Infeld electrodynamics taking into account the backreaction of the spacetime using the Sturm-Liouville…

高能物理 - 理论 · 物理学 2016-04-20 Debabrata Ghorai , Sunandan Gangopadhyay

In this paper, we present the Reduced Order Hysteretic Flux (ROHF) model to describe the relationship between time-varying transport current and internal magnetic flux for composite superconductors. The ROHF model is parametrized using…

加速器物理 · 物理学 2025-07-22 Alexander Glock , Julien Dular , Arjan Verweij , Mariusz Wozniak

We present a computationally efficient framework for predicting the excited-state properties of thermally activated delayed fluorescence (TADF) emitters, integrating extended tight-binding (\xtb), simplified Tamm-Dancoff approximation…

It is well known that numerical simulations of high-speed reacting flows, in the framework of state-to-state formulations, are the most detailed but also often prohibitively computationally expensive. In this work, we start to investigate…

流体动力学 · 物理学 2024-06-19 Lorenzo Campoli , Elena Kustova , Polina Maltseva

We have developed a set of experimental techniques with levitation to investigate the macroscopic magnetic properties of bulk HTS: (i) resonance oscillation technique; (ii) high speed magnetic rotor technique; (iii) the method of viscous…

超导电性 · 物理学 2007-05-23 A. A. Kordyuk , V. V. Nemoshkalenko , A. I. Plyushchay , R. V. Viznichenko

We present a method for characterizing the propagation of the magnetic flux in an artificially drilled bulk high-temperature superconductor (HTS) during a pulsed-field magnetization. As the magnetic pulse penetrates the cylindrical sample,…

超导电性 · 物理学 2015-05-13 Gregory P Lousberg , J-F Fagnard , E Haanappel , X Chaud , M Ausloos , B Vanderheyden , Ph Vanderbemden

To investigate the effect and ability of FACTS devices using the Fast and Flexible Holomorphic Embedding technique (FFHE), it is necessary to develop an embedded system for these devices. Therefore, this paper presents FFHE based embedded…

系统与控制 · 电气工程与系统科学 2021-01-29 Pradeep Singh , Nilanjan Senroy

We make use of a BCS type approach based on the extended Hubbard Hamiltonian to study the superconductor transition and to give a microscopic interpre- tation of the pressure effects on Tc in high temperature superconductors. This novel…

强关联电子 · 物理学 2009-10-30 E. V. L. de Mello , C. Acha

Melting properties are critical for designing novel materials, especially for discovering high-performance, high-melting refractory materials. Experimental measurements of these properties are extremely challenging due to their high melting…