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Local magnetic reversals are an inseparable part of magnetohydrodynamic (MHD) turbulence whose collective outcome on an arbitrary scale in the inertial range may lead to a global stochastic reconnection event with a rate independent of…

高能天体物理现象 · 物理学 2021-01-20 Amir Jafari , Ethan Vishniac , Siyao Xu

Thermal transport in a quasi-ballistic regime is determined not only by the local temperature $T(r)$, or its gradient $\nabla T(r)$, but also by temperature distribution at neighboring points. For an accurate description of non-local…

介观与纳米尺度物理 · 物理学 2022-06-15 Ali Kefayati , Philip B. Allen , Vasili Perebeinos

We validate the application of our recent orbital-free density functional theory (DFT) approach, [Phys. Rev. Lett. 113, 155006 (2014)], for the calculation of ionic and electronic transport properties of dense plasmas. To this end, we…

等离子体物理 · 物理学 2015-12-16 Travis Sjostrom , Jérôme Daligault

A simple similarity has been proposed for kinetic (e.g., particle-in-cell) simulations of plasma transport that can effectively address the longstanding challenge of reconciling the tiny Debye length with the vast system size. This applies…

等离子体物理 · 物理学 2025-04-17 Yanzeng Zhang , Haotian Mao , Yuzhi Li , Xian-Zhu Tang

We investigate magnetic reconnection in systems simultaneously containing asymmetric (anti-parallel) magnetic fields, asymmetric plasma densities and temperatures, and arbitrary in-plane bulk flow of plasma in the upstream regions. Such…

等离子体物理 · 物理学 2016-08-24 C. E. Doss , P. A. Cassak , M. Swisdak

Heat conduction in ionized plasmas in the presence of magnetic fields is today a fashionable problem. The kinetic theory of plasmas, in the context of non-equilibrium thermodynamics, predicts a Hall-effect-like heat flow due to the presence…

天体物理学 · 物理学 2007-05-23 L. S. Garcia-Colin , A. Sandoval-Villalbazo , A. L. Garcia-Perciante , A. Arrieta

By using a non-local model, fluid simulations can capture kinetic effects in the parallel electron heat-flux better than is possible using flux limiters in the usual diffusive models. Non-local and diffusive models are compared using a test…

等离子体物理 · 物理学 2013-07-16 John Omotani , Ben Dudson

A feedforward scheme is applied for drift waves control in a magnetized magnetron sputtering plasma. A system of driven electrodes collecting electron current in a limited region of the explored plasma is used to interact with unstable…

等离子体物理 · 物理学 2015-06-19 E. Martines , M. Zuin , R. Cavazzana , J. Adámek , V. Antoni , G. Serianni , M. Spolaore , N. Vianello

Particle pair (relative) diffusion in a field of homogeneous turbulence with generalised power-law energy spectra, $E(k)\sim k^{-p}$ for $1< p\le 3$ and $k_1\le k\le k_\eta$ with $k_\eta/k_1=10^6$, is investigated numerically using…

流体动力学 · 物理学 2016-01-12 Nadeem A. Malik

The equations of electrostatic drift kinetics are observed to possess a symmetry associated with their intrinsic scale invariance. Under the assumptions of spatial periodicity, stationarity, and locality, this symmetry implies a particular…

等离子体物理 · 物理学 2023-08-23 T. Adkins , P. G. Ivanov , A. A. Schekochihin

In this paper the heat transport in microtubules (MT) is investigated. When the dimension of the structure is of the order of the de Broglie wave length the transport phenomena must be analyzed within quantum mechanics. In this paper we…

生物大分子 · 定量生物学 2007-05-23 Miroslaw Kozlowski , Janina Marciak-kozlowska

Plasmas with electromagnetic fields turbulent at sub-Larmor-scales are a feature of a wide variety of high-energy-density environments, and are essential to the description of many astrophysical/laboratory plasma phenomena. Radiation from…

等离子体物理 · 物理学 2015-09-16 Brett D. Keenan , Alexander L. Ford , Mikhail V. Medvedev

We study thermalization of strongly coupled gauge theory plasma in the presence of magnetic field using the AdS/CFT correspondence. We utilize the falling energy-shell model as a holographic description of gauge theory plasma undergoing…

高能物理 - 唯象学 · 物理学 2015-11-06 Kiminad A. Mamo , Ho-Ung Yee

We study the dynamics of thermalization and the approach to equilibrium in the classical phi^4 theory in 1+1 spacetime dimensions. At thermal equilibrium we exploit the equivalence between the classical canonical averages and transfer…

高能物理 - 唯象学 · 物理学 2014-11-17 D. Boyanovsky , C. Destri , H. J. de Vega

The traditional generalized Ohm's law in MHD do not explicitly present the relation of electric currents and electric fields in fully ionized plasma, and lead to some unexpected concepts, such as "the magnetic frozen-in plasma", magnetic…

太阳与恒星天体物理 · 物理学 2010-07-29 Zhiliang Yang

In collisionless astrophysical plasmas, turbulence mediates the partitioning of free energy among cascade channels and its dissipation into ion and electron heat. The resulting ion heating is often anisotropic, with ions observed to be…

太阳与恒星天体物理 · 物理学 2025-12-04 Zade Johnston , Jonathan Squire

The scaling theory of Grossmann and Lohse (J. Fluid Mech. 407, 27 (2000)) for the turbulent heat and momentum transfer is extended to the magnetoconvection case in the presence of a (strong) vertical magnetic field. The comparison with…

流体动力学 · 物理学 2016-10-19 Till Zürner , Wenjun Liu , Dmitry Krasnov , Jörg Schumacher

Recent advances in nanoscale magnetism have demonstrated the potential for spin-based technology including magnetic random access memory, nanoscale microwave sources, and ultra-low power signal transfer. Future engineering advances and new…

介观与纳米尺度物理 · 物理学 2015-02-24 J. M. Bartell , D. H. Ngai , Z. Leng , G. D. Fuchs

The nonlinear transport features of inhomogeneous chiral plasma in the presence of electromagnetic fields, in rotating coordinates are studied within the relaxation time approach. The chiral distribution functions up to second order in the…

高能物理 - 理论 · 物理学 2017-08-30 Omer F. Dayi , Eda Kilincarslan

By combining different ideas, a general and efficient protocol to deal with discontinuous phase transitions at low temperatures is proposed. For small $T$'s, it is possible to derive a generic analytic expression for appropriate order…

统计力学 · 物理学 2015-06-03 C. E. Fiore , M. G. E. da Luz