Results 61 to 70 of about 2,136,561 (347)
The rise of lead halide perovskite semiconductors has enabled high‐performance LEDs with internal quantum efficiencies approaching 100%. In order to further enhance the external quantum efficiencies limited by light outcoupling effects, in this account, the strategies for reducing energy dissipation through the substrate, waveguide, and evanescent ...
Tommaso Marcato+2 more
wiley +1 more source
Magicity of neutron-rich nuclei within relativistic self-consistent approaches
The formation of new shell gaps in intermediate mass neutron-rich nuclei is investigated within the relativistic Hartree–Fock–Bogoliubov theory, and the role of the Lorentz pseudo-vector and tensor interactions is analyzed.
Jia Jie Li+3 more
doaj +1 more source
Dressed vs. pairwise states, and the geometric phase of monopoles and charges
We construct the Faddeev-Kulish dressed multiparticle states of electrically and magnetically charged particles, incorporating the effects of real and virtual soft photons. We calculate the properties of such dressed states under Lorentz transformations,
Csaba Csáki+4 more
doaj +1 more source
Photon polarization and Wigner's little group
To discuss one-photon polarization states we find an explicit form of the Wigner's little group element in the massless case for arbitrary Lorentz transformation. As is well known, when analyzing the transformation properties of the physical states, only
A. Peres+9 more
core +1 more source
Light propagation in the gravitational field of moving bodies by means of Lorentz transformation: I. Mass monopoles moving with constant velocities [PDF]
We show how to derive the equations of light propagation in the gravitational field of uniformly moving mass monopoles without formulating and integrating the differential equations of light propagation in that field.
S. Klioner
semanticscholar +1 more source
Sandwich Engineering Advances Ductile Thermoelectrics
An innovative sandwich engineering is developed to realize n‐type Ag2(S, Se)‐Ag2Se ductile thermoelectric films, exhibiting a record‐high thermoelectric performance near room‐temperature among n‐type ductile semiconductors. The as‐fabricated in‐plane F‐TED achieves an exceptional power density of 26.5 W m−2 at a temperature difference of 50 K, ranking ...
Hao Wu+10 more
wiley +1 more source
Lorentz transformation and vector field flows
The parameter changes resulting from a combination of Lorentz transformation are shown to form vector field flows. The exact, finite Thomas rotation angle is determined and interpreted intuitively.
Gell-Mann M+11 more
core +3 more sources
This paper describes a particularly didactic and transparent derivation of basic properties of the Lorentz group. The generators for rotations and boosts along an arbitrary direction, as well as their commutation relations, are written as functions of the unit vectors that define the axis of rotation or the direction of the boost (an approach that can ...
openaire +2 more sources
Spin Engineering of Dual‐Atom Site Catalysts for Efficient Electrochemical Energy Conversion
This review highlights recent progress in spin engineering of dual‐atom site catalysts (DASCs), emphasizing how spin‐related properties enhance electrocatalytic activity, selectivity, and stability. It summarizes cutting‐edge developments in dual‐atom catalysis, discusses the underlying spin‐catalysis mechanisms and structure–performance relationships,
Dongping Xue+5 more
wiley +1 more source
Relativity in cosmologically preferred frame and the UHECR paradox
The Greisen-Zatsepin-Kuzmin (GZK) cutoff (5 × 1019eV) of special relativity in the observed ultra high energy cosmic rays (UHECR) spectrum is one of the most puzzling paradoxes in physics.
Saroj Nepal
doaj +3 more sources