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Magnetic fields are present on all scales in the Universe. While we understand the processes which amplify the fields fairly well, we do not have a "natural" mechanism to generate the small initial seed fields. By using fully relativistic…

宇宙学与河外天体物理 · 物理学 2014-09-18 Ellie Nalson , Adam J. Christopherson , Karim A. Malik

Magnetic fields have been regarded as an additional stimulus for electro- and photocatalytic reactions, but not as a direct trigger for catalytic processes. Multiferroic/magnetoelectric materials, whose electrical polarization and surface…

Electromagnetic (EM) coupling between molecular exciton and plasmon has been studied using in Rayleigh scattering or extinction spectroscopy. However, evaluating EM coupling involving subradiant plasmon is challenging because this resonance…

光学 · 物理学 2026-05-15 Tamitake Itoh , Yuko S. Yamamoto

An extended vector meson dominance model is developed to describe electromagnetic nucleon form factors. The model includes families of the $\rho$- and $\omega$-mesons with the associated radial excitations. The free parameters of the model…

高能物理 - 唯象学 · 物理学 2025-01-22 K. S. Kuzmin , N. M. Levashko , M. I. Krivoruchenko

A ferroelectric field effect in the bulk heterojunction was found when an external electric field (EEF) was applied on the active layer of polymer solar cells (PSCs) during the annealing process of the active layer spin-coated with poly…

材料科学 · 物理学 2015-06-17 Meng Li , Heng Ma , Hairui Liu , Yurong Jiang , Heying Niu , Adil Amat

Research into the efficiency of photosynthetic light harvesting has focused on two factors: (1) entanglement of chromophores, and (2) environmental noise. While chromophores are conjugated $\pi$-bonding molecules with strongly correlated…

生物物理 · 物理学 2013-03-29 David A. Mazziotti

Using the worldline formalism we compute an effective action for fermions under a temporally modulated electric field and a spatially modulated magnetic field. It is known that the former leads to an enhanced Schwinger Mechanism, while we…

高能物理 - 理论 · 物理学 2017-03-07 Patrick Copinger , Kenji Fukushima

Magnetic susceptibility, heat capacity, and electrical resistivity measurements have been carried out on single crystals of the intermediate valence compounds Yb2Rh3Ga9 and Yb2Ir3Ga9. These measurements reveal a large anisotropy due…

We present the first theoretical results of the magnetic dipole (M1) $\gamma$-ray strength function ($\gamma$SF) for actinide nuclei within the shell-model Monte Carlo (SMMC) method. We observe a low-energy enhancement (LEE) in the M1…

核理论 · 物理学 2026-05-21 C. Rodgers , D. DeMartini , Y. Alhassid

We calculate, in a systematic way, the general structure of the self-energy of light massive fermions and the effective propagator in a thermomagnetic medium with the inclusion of anomalous magnetic moment (AMM) of the fermion in the weak…

高能物理 - 唯象学 · 物理学 2023-12-12 Nilanjan Chaudhuri , Snigdha Ghosh , Pradip Roy , Sourav Sarkar

The origin of intergalactic magnetic fields is still a mystery and several scenarios have been proposed so far: among them, primordial phase transitions, structure formation shocks and galactic outflows. In this work we investigate how…

天体物理学 · 物理学 2009-11-11 Serena Bertone , Corina Vogt , Torsten Ensslin

We study the generation of strong magnetic fields in magnetars and in the early universe. For this purpose we calculate the antisymmetric contribution to the photon polarization tensor in a medium consisting of an electron-positron plasma…

高能物理 - 唯象学 · 物理学 2016-08-10 Maxim Dvornikov

Applied magnetic fields can alter phase equilibria and kinetics in steels; however, quantitatively resolving how magnetic, chemical, and elastic driving forces jointly influence the microstructure remains challenging. We develop a…

Solar flares release magnetic energy through reconnection, accelerating electrons into nonthermal velocity distributions, including crescent-shaped electron populations. These energetic electron distributions are crucial in driving…

太阳与恒星天体物理 · 物理学 2025-01-08 Mehdi Yousefzadeh

Magnetic elements of the solar surface are studied in magnetograms recorded with the high-resolution Solar Dynamics Observatory / Helioseismic and Magnetic Imager . To extract some statistical and physical properties of these elements…

太阳与恒星天体物理 · 物理学 2017-07-31 Mohsen Javaherian , Hossein Safari , Neda Dadashi , Markus Josef Aschwanden

We have calculated ground state properties and excitation spectra for Ce metal with the {\it ab initio} computational scheme combining local density approximation and dynamical mean-field theory (LDA+DMFT). We considered all electronic…

强关联电子 · 物理学 2009-11-07 M. B. Zölfl , I. A. Nekrasov , Th. Pruschke , V. I. Anisimov , J. Keller

Magnetic fields are considered as a vital ingredient of contemporary star formation, and may have been important during the formation of the first stars in the presence of an efficient amplification mechanism. Initial seed fields are…

星系天体物理 · 物理学 2016-01-20 Muhammad A. Latif , Dominik R. G. Schleicher

The Kondo-lattice compound CeRhIn$_5$ displays a field-induced Fermi surface reconstruction at $B^*\approx30$ T, which occurs within the antiferromagnetic state, prior to the quantum critical point at $B_{c0}\approx50$ T. Here, in order to…

Lentil seeds have been packed in a dielectric barrier device and exposed for several minutes to a cold atmospheric plasma generated in helium with/without a reactive gas (nitrogen or oxygen). While no impact is evidenced on germination…

其他定量生物学 · 定量生物学 2021-03-10 T. Dufour , Q. Gutierrez , C. Bailly

It is demonstrated that in simple soliton models essential features of the electro-magnetic nucleon form factors observed over three orders of magnitude in momentum transfer $t$ are naturally reproduced. The analysis shows that three basic…

高能物理 - 唯象学 · 物理学 2015-06-25 Gottfried Holzwarth