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Cosmic magnetic structures have in common that they are anchored in a dynamo, that an external driver converts kinetic energy into internal magnetic energy, that this magnetic energy is transported as Poynting flux across the magnetically…

高能天体物理现象 · 物理学 2014-03-05 Jan Kuijpers , Harald U. Frey , Lyndsay Fletcher

Within the Sommerfeld atomic model the quantization of magnetic flux through the electronic orbits is investigated together with its dependency on additional sources of magnetic fields. These sources alter the magnetic flux through the…

量子物理 · 物理学 2013-02-26 W. -D. R. Stein

A unified theoretical treatment is presented to describe the physics of electron dynamics in semiconductor and graphene systems. Electron spin fast alignment with the Zeeman magnetic field (physical or effective) is treated as a form of…

量子物理 · 物理学 2015-05-13 S. G. Tan , M. B. A. Jalil , Takashi Fujita

The force density on matter and the kinetic energy-momentum tensor of the electromagnetic field in matter are obtained starting from Maxwell equations and Lorentz force at microscopic level and averaging over a small region of space-time.…

经典物理 · 物理学 2014-08-18 Rodrigo Medina , J. Stephany

The electromagnetic analog of an elastic spring-mass network is constructed. These electromagnetic circuits offer the promise of manipulating electromagnetic fields in new ways, and linear electrical circuits correspond to a subclass of…

经典物理 · 物理学 2008-08-02 Graeme W. Milton , Pierre Seppecher

Contrasts with existing works which all consider nodes as functions and use edges to represent the relationships between different functions. We target at network modeling whose edges are functional data and transform the adjacency matrix…

机器学习 · 统计学 2024-07-16 Haijie Xu , Chen Zhang

We develop a scattering theory of current-induced forces exerted by the conduction electrons of a general mesoscopic conductor on slow "mechanical" degrees of freedom. Our theory describes the current-induced forces both in and out of…

介观与纳米尺度物理 · 物理学 2011-07-12 Niels Bode , Silvia Viola Kusminskiy , Reinhold Egger , Felix von Oppen

We present an analysis of the formation of atmospheric flux ropes in a magnetohydrodynamic (MHD) solar flux emergence simulation. The simulation domain ranges from the top of the solar interior to the low corona. A twisted magnetic flux…

太阳与恒星天体物理 · 物理学 2015-06-17 David MacTaggart , Andrew Haynes

We study the tunneling current through a mesoscopic two-terminal ring with spin-orbit coupling, which is threaded by a magnetic flux. The electron-electron interaction in the ring is described in terms of a Tomonaga-Luttinger model which…

介观与纳米尺度物理 · 物理学 2007-05-23 M. Pletyukhov , V. Gritsev , N. Pauget

In metallic ferromagnets, the spin-transfer torque and spin-motive force are known to exhibit a reciprocal relationship. Recent experiments on ferromagnets with strong spin-orbit coupling have revealed a rich complexity in the interaction…

介观与纳米尺度物理 · 物理学 2015-06-12 Kjetil M. D. Hals , Arne Brataas

The axiomatic structure of the electromagnetic theory is outlined. We will base classical electrodynamics on (1) electric charge conservation, (2) the Lorentz force, (3) magnetic flux conservation, and (4) on the Maxwell-Lorentz spacetime…

经典物理 · 物理学 2007-05-23 Friedrich W. Hehl , Yuri N. Obukhov

We derive equations of motion for topological solitons in antiferromagnets under the combined action of perturbations such as an external magnetic field and torque-generating electrical current. Aside from conservative forces, such…

介观与纳米尺度物理 · 物理学 2017-06-28 Sayak Dasgupta , Se Kwon Kim , Oleg Tchernyshyov

Entangled networks are ubiquitous in tissues, polymers, and fabrics. However, their mechanics remain insufficiently understood due to the complexity of the topological constraints at the network level. Here, we develop a mathematical…

软凝聚态物质 · 物理学 2025-09-23 Juntao Huang , Jiabin Liu , Shaoting Lin

By using variational calculus and exterior derivative formalism, we proposed in two previous joint papers with S. Siparov a new geometric approach for electromagnetism in pseudo-Finsler spaces. In the present paper, we provide more details,…

数学物理 · 物理学 2011-11-15 Nicoleta Voicu

We use ensemble machine learning algorithms to study the evolution of magnetic fields in magnetohydrodynamic (MHD) turbulence that is helically forced. We perform direct numerical simulations of helically forced turbulence using mean field…

太阳与恒星天体物理 · 物理学 2019-09-11 Farrukh Nauman , Joonas Nättilä

This paper is the first in a series revisiting the Faraday effect, or more generally, the theory of electronic quantum transport/optical response in bulk media in the presence of a constant magnetic field. The independent electron…

介观与纳米尺度物理 · 物理学 2008-11-26 Horia D. Cornean , G. Nenciu , Thomas G. Pedersen

Coupling between heat and electrical currents is at the heart of thermoelectric processes. From a thermal viewpoint this may be seen as an additional thermal flux linked to the appearance of electrical current in a given thermoelectric…

材料科学 · 物理学 2012-12-03 Y. Apertet , H. Ouerdane , C. Goupil , Ph. Lecoeur

The paper is devoted to the applications of the theory of dynamical systems to the theory of transport phenomena in metals in the presence of strong magnetic fields. More precisely, we consider the connection between the geometry of the…

数学物理 · 物理学 2021-05-18 A. Ya. Maltsev , S. P. Novikov

A complete geometric unification of gravity and electromagnetism is proposed by considering two aspects of torsion: its relation to spin established in Einstein--Cartan theory and the possible interpretation of the torsion trace as the…

高能物理 - 理论 · 物理学 2007-05-23 Kenichi Horie

In this work we establish that finite directed graphs give rise to semiflows on the power set of their nodes. We analyze the topological dynamics for semiflows on finite directed graphs by characterizing Morse decompositions, recurrence…

动力系统 · 数学 2020-05-29 José Ayala , Wolfgang Kliemann