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We present an efficient and accurate energy-conserving implicit particle-in-cell~(PIC) algorithm for the electrostatic Vlasov system, with particular emphasis on its high robustness for simulating complex plasma systems with multiple…

计算物理 · 物理学 2022-11-21 Zhuoning Li , Zhenli Xu , Zhiguo Yang

This paper proposes to build a bridge between microscopic descriptions of matter with internal energy, composed of many fast interacting particles inside an environment, and their port-Hamiltonian (PH) descriptions at macroscopic scale. The…

动力系统 · 数学 2023-01-16 Judy Najnudel , Thomas Hélie , David Roze , Rémy Muller

Tensor-network techniques have enjoyed outstanding success in physics, and have recently attracted attention in machine learning, both as a tool for the formulation of new learning algorithms and for enhancing the mathematical understanding…

机器学习 · 计算机科学 2019-12-02 Ivan Glasser , Ryan Sweke , Nicola Pancotti , Jens Eisert , J. Ignacio Cirac

The multi-period dynamics of energy storage (ES), intermittent renewable generation and uncontrollable power loads, make the optimization of power system operation (PSO) challenging. A multi-period optimal PSO under uncertainty is…

系统与控制 · 电气工程与系统科学 2021-07-22 Ren Hu , Qifeng Li

In this paper, we explore a new type of smooth and well-behaved polynomial redshift function that can avoid a future singularity. Using this function, we have proposed different redshift parametrizations of the dark energy equation of…

广义相对论与量子宇宙学 · 物理学 2025-10-28 Prabir Rudra , Aritra Sanyal , Promila Biswas , Tuhina Ghorui , Ritabrata Biswas , Farook Rahaman

We propose an edge averaged finite element(EAFE) discretization to solve the Heat-PNP (Poisson-Nernst-Planck) equations approximately. Our method enforces positivity of the computed charged density functions and temperature function. Also…

数值分析 · 数学 2019-11-20 Simo Wu , Chun Liu , Ludmil Zitakanov

In this work we develop an implementation of the Wang--Landau algorithm [Phys. Rev. Lett. \textbf{86}, 2050-2053 (2001)]. This algorithm allows us to find the density of states (DOS), a function that, for a given system, describes the…

统计力学 · 物理学 2022-02-09 Felipe Moreno , Joaquín Peralta , Sergio Davis

Radio frequency wireless power transfer (RF-WPT) is an emerging technology that enables transferring energy from an energy access point (E-AP) to multiple energy receivers (E-Rs), in a wireless manner. In practice, there are some…

信息论 · 计算机科学 2018-04-17 Roohollah Rezaei , Mohammad Movahednasab , Naeimeh Omidvar , Mohammad Reza Pakravan

We construct four equation of state (EoS) tables, tabulated over a range of temperatures, densities, and charge fractions, relevant for neutron star applications such as simulations of neutron star mergers. The EoS are computed from a…

核理论 · 物理学 2023-11-21 Mark G. Alford , Liam Brodie , Alexander Haber , Ingo Tews

In this paper, we present a systematic framework to derive a Lagrangian scheme for porous medium type generalized diffusion equations by employing a discrete energetic variational approach. Such discrete energetic variational approaches are…

数值分析 · 数学 2020-07-15 Chun Liu , Yiwei Wang

Wireless power transfer (WPT) is a viable source of energy for wirelessly powered communication networks (WPCNs). In this paper, we first consider WPT from an energy access point (E-AP) to multiple energy receivers (E-Rs) to obtain the…

The increasing richness of data related to cold dense matter, from laboratory experiments to neutron-star observations, requires a framework for constraining the properties of such matter that makes use of all relevant information. Here, we…

高能天体物理现象 · 物理学 2020-01-08 M. Coleman Miller , Cecilia Chirenti , Frederick K. Lamb

We propose a simple approach for studying systems of compressed matter based on the Thomas-Fermi statistical model of single atom. The central point of our work is the development of the concept of ``statistical ionization'' by compression;…

统计力学 · 物理学 2007-05-23 L. Delle Site

We explore the possibilities of applying structure-preserving numerical methods to a plasma hybrid model with kinetic ions and mass-less fluid electrons satisfying the quasi-neutrality relation. The numerical schemes are derived by finite…

We study a novel large dimensional approximate factor model with regime changes in the loadings driven by a latent first order Markov process. By exploiting the equivalent linear representation of the model, we first recover the latent…

计量经济学 · 经济学 2024-12-04 Matteo Barigozzi , Daniele Massacci

This paper develops a comprehensive mathematical framework for energy-based modeling of physical systems, with particular emphasis on preserving fundamental structural properties throughout the modeling and discretization process. The…

数值分析 · 数学 2025-12-11 M. H. M Rashid

Features and parameters of \boiling" liquid layer, which arises under conditions of isentropic expansion of warm dense matter (WDM), are stud- ied with the use of simplest van der Waals equation of state (EOS). Advan- tage of this EOS is…

等离子体物理 · 物理学 2012-09-04 Dmitry Borovikov , Igor Iosilevskiy

Energy-Based Models (EBMs) have proven to be a highly effective approach for modelling densities on finite-dimensional spaces. Their ability to incorporate domain-specific choices and constraints into the structure of the model through…

机器学习 · 计算机科学 2023-02-24 Jen Ning Lim , Sebastian Vollmer , Lorenz Wolf , Andrew Duncan

Starting from a realistic constituent quark model for the nucleon-nucleon interaction, we derive the equation of state (EOS) of nuclear matter within the Bethe-Brueckner-Goldstone approach up to three-hole-line level, without need to…

核理论 · 物理学 2015-12-23 K. Fukukawa , M. Baldo , G. F. Burgio , L. Lo Monaco , H. -J. Schulze

In this study, internal energy (U), electric field (E) and particle number (N) which specify the system quantities i.e. thermodynamical quantities for the proteins. In the frame of thermodynamical formalism, the relation between the heat…

统计力学 · 物理学 2007-05-23 G. Oylumluoglu , F. Buyukkilic , D. Demirhan