Results 121 to 130 of about 576,868 (362)

Neural Network‐Based Permittivity Engineering of Magnetic Absorbers for Customizable Microwave Absorption

Advanced Science, EarlyView.
A neural network‐enabled permittivity engineering paradigm is introduced, transcending traditional trial‐and‐error design. By decoupling electromagnetic parameters and screening a high‐throughput feature space, an ultrathin (1.0 mm) magnetic absorber is inversely designed, experimentally achieving a superior and customizable 5.1 GHz bandwidth and ...
Chenxi Liu, Jinzhe Li, Sen Li, Zhongqiu Guo, Yao Chen, Tian Li, Renchi Qin, Jiaxu Sun, Yongxi Lu, Fanbin Meng   +9 more
wiley   +1 more source

A Dual‐Piezoelectric Metal–Organic Cage/COF Z‐Scheme Heterojunction for Solar‐Mechanical Water Splitting

Advanced Science, EarlyView.
A dual‐piezoelectric Z‐scheme heterojunction is constructed by integrating a piezoelectric metal–organic cage (MOC‐FA3) with a β‐ketoenamine‐linked covalent organic framework (S‐COF). This design enables efficient solar‐mechanical energy conversion, achieving remarkable piezo‐photocatalytic pure water splitting for simultaneous H2 and H2O2 production ...
Xin‐Ao Li, Yixuan Wang, Zi‐Zhan Liang, Xin‐Bang Peng, Li‐Min Xiao, Li Gong, Xinyi Yang, Bo Zou, Yecheng Zhou, Jun‐Min Liu   +9 more
wiley   +1 more source

CONSTRAINING SPACETIME TORSION WITH THE MOON, MERCURY AND LAGEOS

Acta Polytechnica, 2013
We consider an extension of Einstein General Relativity where, beside the Riemann curvature tensor, we suppose the presence of a torsion tensor. Using a parametrized theory based on symmetry arguments, we report on some results concerning the constraints
Riccardo March, Giovanni Bellettini, Roberto Tauraso, Simone Dell’Agnello   +3 more
doaj   +1 more source

High‐Throughput Screening and Characterization of Non‐Flammable Na‐Cl Solid Electrolytes

Advanced Electronic Materials, EarlyView.
A Na‐Cl solid electrolyte with high ionic conductivity is screened from a structural database using force‐field molecular dynamics (MD) simulations and density functional theory (DFT)‐MD calculations. Na3La5Cl18 is identified, synthesized, and characterized.
Naoto Tanibata, Naoki Nonaka, Daisuke Urushihara, Hayami Takeda, Ryo Kobayashi, Naoaki Kuwata, Masanobu Nakayama   +6 more
wiley   +1 more source

GW170817 Viable Einstein-Gauss-Bonnet inflation compatible with the atacama cosmology telescope data

Physics Letters B
In this work we investigate several Einstein-Gauss-Bonnet models that are compatible with the GW170817 event, the Atacama Cosmology Telescope data and the BICEP/Keck updated Planck constraints on the tensor-to-scalar ratio.
S.D. Odintsov, V.K. Oikonomou
doaj   +1 more source

Kerr-Schild ansatz in Einstein-Gauss-Bonnet gravity: An exact vacuum solution in five dimensions

, 2009
As is well-known, Kerr-Schild metrics linearize the Einstein tensor. We shall see here that they also simplify the Gauss-Bonnet tensor, which turns out to be only quadratic in the arbitrary Kerr-Schild function f when the seed metric is maximally ...
Anabalón A Deruelle N Oliva J Tempo D Troncoso R, Andrés Anabalón, Charmousis C, David Tempo, Deruelle N, Deruelle N, Deruelle N, Deruelle N Madore J, Deser S, Dotti G Oliva J Troncoso R, Emparan R, Henneaux M Ruffini R, Julio Oliva, Kerr R P, Misao Sasaki, Mora P, Nathalie Deruelle, Ortaggio M, Padilla A, Pravda V, Ricardo Troncoso, Stephani H, Yoshiyuki Morisawa   +22 more
core   +4 more sources

Universal Entanglement and an Information‐Complete Quantum Theory

Advanced Physics Research, EarlyView.
This Perspective summarize an informationcomplete quantum theory which describes a fully quantum world without any classical systems and concepts. Here spacetime/gravity, having to be a physical quantum system, universally entangles matter (matter fermions and their gauge fields) as an indivisible trinity, and encodes information‐complete physical ...
Zeng‐Bing Chen
wiley   +1 more source

Scalar-tensor theories of gravity from a thermodynamic viewpoint

Journal of High Energy Physics
In any diffeomorphism invariant theory of gravity, one can define a Noether charge arising from the invariance of the Lagrangian under diffeomorphisms. We have determined the Noether charge for scalar-tensor theories of gravity, in which case the gravity
Krishnakanta Bhattacharya, Sumanta Chakraborty   +1 more
doaj   +1 more source

Efficient Dynamics: Reduced‐Order Modeling of the Time‐Dependent Schrödinger Equation

Advanced Physics Research, EarlyView.
Reduced‐order modeling (ROM) approaches for the time‐dependent Schrödinger equation are investigated, highlighting their ability to simulate quantum dynamics efficiently. Proper Orthogonal Decomposition, Dynamic Mode Decomposition, and Reduced Basis Methods are compared across canonical systems and extended to higher dimensions.
Kolade M. Owolabi
wiley   +1 more source

Holographic reconstruction of flat spacetime

Journal of High Energy Physics
The flat/CFT dictionary between the bulk gravitational theory and boundary conformal field theory is systematically developed in this paper. Asymptotically flat spacetime is built up by asymptotically AdS hyperboloid slices in terms of Fefferman Graham ...
Zezhuang Hao
doaj   +1 more source