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We develop a covariant density matrix approach to kinetic theory of QED plasmas subjected into a strong external electromagnetic field. A canonical quantization of the system on space-like hyperplanes in Minkowski space and a covariant…

等离子体物理 · 物理学 2007-05-23 A. Hoell , V. G. Morozov , G. Roepke

Magnetic effects on chiral phase transition have been investigated in a modified soft-wall AdS/QCD model, in which the dilaton field is taken to be negative at the ultraviolet region and positive at the infrared region as in…

高能物理 - 理论 · 物理学 2017-03-08 Danning Li , Mei Huang , Yi Yang , Pei-Hung Yuan

The measurement of the magnetic field created in high-energy heavy-ion collisions is challenging, due the the fact that the magnetic field decays so drastically that in a thermalized quark-gluon plasma the field strength becomes rather…

核理论 · 物理学 2024-06-17 Minghua Wei , Li Yan

The magnetic moment of an electron gas on the surface of constant negative curvature is investigated. It is shown that the surface curvature leads to the appearance of the region of the monotonic dependence $M(B)$ at low magnetic fields. At…

介观与纳米尺度物理 · 物理学 2009-11-10 D. V. Bulaev , V. A. Margulis

We use density-functional methods to study the effects of an external magnetic field on two-dimensional quantum dots with a rectangular hard-wall confining potential. The increasing magnetic field leads to spin polarization and formation of…

强关联电子 · 物理学 2009-11-10 E. Räsänen , A. Harju , M. J. Puska , R. M. Nieminen

We study the effects of high magnetic fields on the particle population and equation of state of hybrid stars using an extended hadronic and quark SU(3) non-linear realization of the sigma model. In this model the degrees of freedom change…

高能天体物理现象 · 物理学 2015-05-30 V. Dexheimer , R. Negreiros , S. Schramm

We give a derivation for the indirect interaction between two magnetic dipoles induced by the quantized electromagnetic field. It turns out that the interaction between permanent dipoles directly returns to the classical form; the…

量子物理 · 物理学 2018-01-19 Jiaxuan Wang , Hui Dong , Sheng-Wen Li

We investigate MCA of CoFe(011) thin films as a function of strength of strain and film thickness has been studied. It is elucidated that perpendicular magnetocystalline anisotropy (MCA) energy (EMCA) is getting stronger with compressed…

材料科学 · 物理学 2019-06-24 Eunsung Jekal , Phuong Dao

Effective coupling constant in quantum electrodynamics is investigated. A pole appears in the effective coupling constant for the space-like momentum if it is calculated by perturbation. The pole can be eliminated by the analytic…

高能物理 - 唯象学 · 物理学 2007-10-09 Hirohisa Ishikawa , Keiji Watanabe

We introduce the notion of inverse effect of magnetostriction for magnetostrictive/piezoelectric heterostructures and study this effect theoretically and experimentally. It is shown that the inverse effect of magnetostriction may crucially…

材料科学 · 物理学 2019-05-28 M. Auslender , E. Liverts , B. Zadov , A. Elmalem , A. Zhdanov , A. Grosz , E. Paperno

We investigate the collective magnetoplasmon excitations in a quantum dot containing finite number of electrons in the high magnetic field limit. We consider the electrons in the lowest Landau level and neglect mixing between the higher…

介观与纳米尺度物理 · 物理学 2007-05-23 Subhasis Sinha

It has long been known that a free electron in an intense plane-wave field has a mass shell that differs from the usual free-electron mass shell, with a form that implies that an intensity-dependent increase in mass occurs. It has been an…

量子物理 · 物理学 2014-02-26 H. R. Reiss

Density-functional theory is used to study the electronic structure of quantum dots in a magnetic field. New series of magic numbers are found for the total angular momentum of electrons. The empirical formula for the plateau width is…

介观与纳米尺度物理 · 物理学 2022-09-13 A. A. Vasilchenko

We study static neutron stars with poloidal magnetic fields and a simple class of electric current distributions consistent with the requirement of stationarity. For this class of electric current distributions, we find that magnetic fields…

天体物理学 · 物理学 2009-10-31 Christian Y. Cardall , Madappa Prakash , James M. Lattimer

The effects of the application of a magnetic field on the diagonal stripe spin-glass phase is studied in lightly doped La_{2-x}Sr_xCuO_4 (x=0.014 and 0.024). With increasing magnetic field, the magnetic elastic intensity at the diagonal…

强关联电子 · 物理学 2009-11-07 M. Matsuda , M. Fujita , K. Yamada , R. J. Birgeneau , Y. Endoh , G. Shirane

Permanent magnet materials require a high uniaxial magneto-crystalline anisotropy. Exchange coupling between small crystallites with easy-plane anisotropy induces an effective uniaxial anisotropy if arranged accordingly. Nanostructuring of…

材料科学 · 物理学 2017-11-10 J. Fischbacher , A. Kovacs , H. Oezelt , M. Gusenbauer , D. Suess , T. Schrefl

The fine structure constant, alpha, is shown to be proportional to the ratio of the quanta of electric and magnetic flux of force of the electron, and provides a new representation, which is global across all unit systems. Consequently, a…

高能物理 - 唯象学 · 物理学 2023-03-14 Michael Edmund Tobar

We investigate the combined effects of a uniform magnetic field and boundary conditions on vacuum energy and topological mass generation in a coupled scalar field theory. The system consists of a real scalar field, subject to Dirichlet…

高能物理 - 理论 · 物理学 2025-12-11 A. J. D. Farias Junior , Andrea Erdas , Herondy F. Santana Mota

With regard to the coupling constant and the strong magnetic field of neutron stars, we have studied these stars in the 4D Einstein Gauss Bonnet (4D EGB) gravity model in order to grasp a better understanding of these objects. In this…

广义相对论与量子宇宙学 · 物理学 2024-02-23 Gholam Hossein Bordbar , Mohammad Mazhari , Ahmad Poostforush

We study the finite-size and surface effects on the thermal and spatial behaviors of the magnetisation of a small magnetic particle. We consider two systems: 1) A box-shaped isotropic particle of simple cubic structure with either periodic…

材料科学 · 物理学 2009-10-31 H. Kachkachi , M. Nogues , E. Tronc , D. A. Garanin