Results 51 to 60 of about 383,957 (288)

Duality-invariant extensions of Einstein-Maxwell theory

Journal of High Energy Physics, 2021
We investigate higher-derivative extensions of Einstein-Maxwell theory that are invariant under electromagnetic duality rotations, allowing for non-minimal couplings between gravity and the gauge field. Working in a derivative expansion of the action, we
Pablo A. Cano, Ángel Murcia
doaj   +1 more source

On the Statistical Foundations of Kaluza's Magnetohydrodynamics

, 2016
The introduction of electromagnetic fields into the Boltzmann equation following a 5D general relativistic approach is considered in order to establish the transport equations for dilute charged fluids in the presence of a weak electromagnetic field. The
Sagaceta-Mejia, A. R., Sandoval-Villalbazo, A.   +1 more
core   +1 more source

Spectrally Tunable 2D Material‐Based Infrared Photodetectors for Intelligent Optoelectronics

Advanced Functional Materials, EarlyView.
Intelligent optoelectronics through spectral engineering of 2D material‐based infrared photodetectors. Abstract The evolution of intelligent optoelectronic systems is driven by artificial intelligence (AI). However, their practical realization hinges on the ability to dynamically capture and process optical signals across a broad infrared (IR) spectrum.
Junheon Ha, Yingshan Ma, Yong Nam An, Sung‐Un An, Hyeon Hak Jung, Suvi‐Tuuli Varjamo, Jiwon Yoo, Junho Min, Hanvit Kim, Faisal Ahmed, Sang Hoon Chae, Young Min Song, Weiwei Cai, Tawfique Hasan, Zhipei Sun, Dong‐Ho Kang, Hyeon‐Jin Shin, Yunyun Dai, Hoon Hahn Yoon   +18 more
wiley   +1 more source

The Orbital and Epicyclic Frequencies in Axially Symmetric and Stationary Spacetime

Universe, 2022
Motivated by observational evidence of the electromagnetic signal from the X-ray binary system known as quasi-periodic oscillations in the light curves of astrophysical black holes or neutron stars, we examined the general relativity and alternative ...
Bobur Turimov, Ozodbek Rahimov
doaj   +1 more source

A generalized electromagnetic theory for the mass spectrum of neutrinos [PDF]

Gravitation and Cosmology, 2014
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
de Oliveira, E. Capelas, Rodrigues, W. A. jun., Vaz, J. jun.   +2 more
openaire   +2 more sources

The Effect of Purcell Cavities on the Lifetime of Thermally Activated Delayed Fluorescent Emitters

Advanced Functional Materials, EarlyView.
A pressing challenge to OLED displays and lighting is to balance high efficiency and long operational lifetime in the deep blue spectrum. The Purcell effect can reduce the triplet density and hence the probability for destructive energy‐driven triplet annihilation events that limit the OLED lifetime. Here we study of the Purcell effect on two different
Sritoma Paul, Haonan Zhao, Collin N. Muniz, Mark E. Thompson, Stephen R. Forrest   +4 more
wiley   +1 more source

First law of black holes in the gravitational electromagnetic system with magnetic charge

Physics Letters B
The quantum corrections in Einstein-Maxwell theory are typically described by introducing higher-curvature terms and non-minimally coupled electromagnetic fields.
Jie Jiang, Aofei Sang
doaj   +1 more source

Electromagnetic field in fiber-reinforced micropolar thermoelastic medium using four models

Journal of Ocean Engineering and Science, 2020
This paper aimed to study the effect of electromagnetic field on general model of the equations of the generalized thermoelasticity reinforcement of the deformation of a micropolar generalized thermoelastic medium. The phenomenon is in the context of the
S.M. Abo-Dahab, A.M. Abd-Alla, A.A. Kilany   +2 more
doaj   +1 more source

Conductance‐Dependent Photoresponse in a Dynamic SrTiO3 Memristor for Biorealistic Computing

Advanced Functional Materials, EarlyView.
A nanoscale SrTiO3 memristor is shown to exhibit dynamic synaptic behavior through the interaction of local electrical and global optical signals. Its photoresponse depends quantitatively on the conductance state, which evolves and decays over tunable timescales, enabling ultralow‐power, biorealistic learning mechanisms for advanced in‐memory and ...
Christoph Weilenmann, Hanglin He, Marko Mladenović, Till Zellweger, Kevin Portner, Klemens Bauer, Guillaume Bellec, Mathieu Luisier, Alexandros Emboras   +8 more
wiley   +1 more source

Einstein–Cartan–Dirac gravity with U(1) symmetry breaking

European Physical Journal C: Particles and Fields, 2019
Einstein–Cartan theory is an extension of the standard formulation of General Relativity where torsion (the antisymmetric part of the affine connection) is non-vanishing.
Francisco Cabral, Francisco S. N. Lobo, Diego Rubiera-Garcia   +2 more
doaj   +1 more source