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In the last decade, the use of Machine and Deep Learning (MDL) methods in Condensed Matter physics has seen a steep increase in the number of problems tackled and methods employed. A number of distinct MDL approaches have been employed in…

计算工程、金融与科学 · 计算机科学 2023-03-08 Edoardo Di Napoli , Xinzhe Wu , Thomas Bornhake , Piotr M. Kowalski

A three-dimensional (3D) MHD model is applied to simulate the evolution of a large-scale magnetic field in a barred galaxy possessing a gaseous halo extending to about 2.8 kpc above the galactic plane. As the model input we use a…

天体物理学 · 物理学 2009-11-07 K. Otmianowska-Mazur , D. Elstner , M. Soida , M. Urbanik

Electric propulsion is now a sucessfull method for primary propulsion of deep space long duration missions and for geosyncronous satellite attitude control. Closed Drift Plasma Thruster, so called Hall Thruster or SPT (stationary plasma…

Electromagnetic scattering in moving structures is a fundamental topic in physics and engineering. Yet, no general numerical solution to related problems has been reported to date. We introduce here a generalized FDTD scheme to remedy this…

计算物理 · 物理学 2023-07-19 Zoé-Lise Deck-Léger , Amir Bahrami , Zhiyu Li , Christophe Caloz

The propagation of a relativistic electron-positron beam in a magnetized electron-ion plasma is studied, focusing on the polarization of the radiation generated in this case. Special emphasis is laid on investigating the polarization of the…

等离子体物理 · 物理学 2020-06-11 Ujjwal Sinha , Naveen Kumar

A general, fast, and effective approach is developed for numerical calculation of kinetic plasma dispersion relations. The plasma dispersion function is approximated by $J$-pole expansion. Subsequently, the dispersion relation is…

等离子体物理 · 物理学 2016-02-18 Hua-sheng Xie , Yong Xiao

We study induced (stimulated) scattering of linearly polarized, strong electromagnetic waves in pair plasmas, which is crucial for understanding the propagation of fast radio bursts (FRBs). Magnetars are the most promising progenitors of…

高能天体物理现象 · 物理学 2026-04-20 Masanori Iwamoto , Kunihito Ioka

Wave induced attraction of matter is a unique aspect of ponderomotive forcing by electromagnetic (e/m) waves in plasmas. The Miller force, sometimes denoted the gradient force, is of particular interest, because the direction as well as…

等离子体物理 · 物理学 2015-06-11 Rickard Lundin , Hans Lidgren

Magnetohydrodynamic (MHD) seismology uses naturally occurring MHD waves to infer plasma properties that are otherwise hard to measure, especially magnetic field strength and topology, electric currents, fine structuring, transport…

Plasmas screen electromagnetic waves of frequency less than the plasma frequency, omega_p, with a skin depth, delta, specified by the electrical conductivity, sigma. Current estimates of the transport properties of the QCD plasma indicates…

高能物理 - 唯象学 · 物理学 2007-05-23 Sourendu Gupta

Near- and far-field optical properties of silicon nanostructures under linear polarization (Gaussian beam), and azimuthally or radially focused cylindrical vector beams are investigated by finite-difference time-domain method (FDTD) in Meep…

Turbulent space and astrophysical plasmas exhibit a complex dynamics, which involves nonlinear coupling across different temporal and spatial scales. There is growing evidence that impulsive events, such as magnetic reconnection…

The polarization plane of the cosmic microwave background radiation can be rotated either in a magnetized plasma or in the presence of a quintessential background with pseudoscalar coupling to electromagnetism. A unified treatment of these…

高能物理 - 唯象学 · 物理学 2009-11-10 Massimo Giovannini

Ab initio simulations of the propagation in a plasma of a soon to be available relativistic electron-positron beam or fireball beam provide an effective mean for the study of microphysics relevant to astrophysical scenarios. We show that…

等离子体物理 · 物理学 2018-09-12 P. Muggli , S. F. Martins , N. Shukla , J. Vieira , L. O. Silva

In this paper we study the polarization tensor of photons in a QED plasma in the presence of a magnetic field. We do it both at vanishing and at finite temperature. We use two different methods to compute the polarization tensor components…

高能物理 - 唯象学 · 物理学 2009-10-28 Ulf H. Danielsson , Dario Grasso

This paper presents the state of the art of kinetic modeling techniques for simulating plasma kinetic dynamics in magnetospheres. We describe the critical numerical techniques for enabling large-scale kinetic simulations of magnetospheres:…

We present a geometrical methodology to interpret the periodical light curves of Soft Gamma Repeaters based on the magnetar model and the numerical arithmetic of the three-dimensional magnetosphere model for the young pulsars. The hot…

天体物理学 · 物理学 2009-11-13 J. J. Jia , Y. F. Huang , K. S. Cheng

We integrate the MHD ideal equations of a slender flux tube to simulate the internal plasma dynamics of coronal post-flare loops. We study the onset and evolution of the internal plasma instability to compare with observations and to gain…

太阳与恒星天体物理 · 物理学 2015-05-13 C. A. Fernandez , A. Costa , S. Elaskar , W. Schulz

Fully realizing the potential of multigrid solvers often requires custom algorithms for a given application model, discretizations and even regimes of interest, despite considerable effort from the applied math community to develop fully…

等离子体物理 · 物理学 2023-02-22 Mark F. Adams , Matthew K. Knepley

We investigate the properties of natural two-dimensional (2D) magnetoplasma modes in laterally confined electron systems, such as 2D materials, quantum wells, or inversion layers in semiconductors, with an elliptic Fermi surface. The…

介观与纳米尺度物理 · 物理学 2025-11-18 D. A. Rodionov , I. V. Zagorodnev