Results 81 to 90 of about 197,054 (272)

Simultaneous eigenstates of the number-difference operator and a bilinear interaction Hamiltonian derived by solving a complex differential equation

, 2005
As a continuum work of Bhaumik et al who derived the common eigenvector of the number-difference operator Q and pair-annihilation operator ab (J. Phys.
Erdèlyi A., Fan H.-Y., HONG-YI FAN, WEI-BO GAO   +3 more
core   +1 more source

Divergent Responses of Bacterial Communities to Permafrost Degradation and Their Associations With Carbon Across Vertical Profiles

Advanced Science, EarlyView.
Bacterial α‐diversity decreases, but stochasticity and community stability increase across the 15 m‐depth vertical profiles and along the degraded gradient within the active layer. The abundance and interaction of core taxa mainly control community stability in the active and permafrost layers, respectively.
Shengyun Chen, Yuzheng Gu, Ali Bahadur, Enyan Liu, Tonghua Wu, Xiaofan Zhu, Yuanqiang Zou, Hewei Liang, Peijie Wei, Linwei Wu, Qingbai Wu, Peizhi Yang, Hongyan Yu, Yunfeng Yang   +13 more
wiley   +1 more source

Machine Learning Discovery of Record‐Low Lattice Thermal Conductivity in Double Perovskites

Advanced Science, EarlyView.
 A deep learning interatomic potential is introduced to predict forces for computing phonon properties and thermal transport behavior in double perovskites. Screening 9,709 compounds identifies 1,597 stable materials, and Boltzmann transport calculations including both three and four‐phonon scattering suggests a record‐low lattice thermal conductivity ...
Md Zaibul Anam, Alejandro Rodriguez, Riccardo Rurali, Ming Hu   +3 more
wiley   +1 more source

Localization of Eigenstates & Mean Wehrl Entropy

, 1999
Dynamics of a periodically time dependent quantum system is reflected in the features of the eigenstates of the Floquet operator. Of the special importance are their localization properties quantitatively characterized by the eigenvector entropy, the ...
Arecchi, Bogomolny, Bohigas, Braun, Casati, Casati, Haake, Haake, Haake, Heller, Husimi, Izrailev, Jones, Karol Życzkowski, Kuś, Kuś, Lebœuf, Lee, Lieb, Mirbach, Mirbach, Penrose, Perelomov, Radcliffe, Słomczyński, Słomczyński, Słomczyński, Takahashi, Vieira, Wehrl, Wehrl, Życzkowski, Życzkowski, Życzkowski, Życzkowski, Życzkowski   +35 more
core   +1 more source

In Situ X‐Ray Tomography and Acoustic Emission Monitoring of Damage Evolution in C/C‐SiC Composites Fabricated by Liquid Silicon Infiltration

Advanced Science, EarlyView.
This study investigates how the internal structure of fiber‐reinforced ceramic composites affects their resistance to damage. By combining 3D X‐ray imaging with acoustic emission monitoring during mechanical testing, it reveals how silicon distribution influences crack formation.
Yang Chen, Renato S. M. Almeida, Stefan Flauder, Guillaume Couégnat, Kamen Tushtev, Jürgen Horvath, Peter Wriggers, Kurosch Rezwan   +7 more
wiley   +1 more source

Partly zero eigenvectors [PDF]

Linear and Multilinear Algebra, 1990
This paper is concerned with the forced presence or absence of zero components in an eigenvector. Relative to a fixed matrix Awith eigenvalue λ, we characterize the strictly nonzero part of a partly zero eigenvector associated with λ. We also give a sufficient condition for a fixed matrix to have a partly zero eigenvector, and discuss several examples ...
John S. Maybee, D.D. Olesky, P. van den Driessche   +2 more
openaire   +1 more source

Eigenvector-based identification of bipartite subgraphs

, 2018
We report our experiments in identifying large bipartite subgraphs of simple connected graphs which are based on the sign pattern of eigenvectors belonging to the extremal eigenvalues of different graph matrices: adjacency, signless Laplacian, Laplacian,
Asratian, Baker, Barabási, Bylka, Chao, Chung, Dall, Debdas Paul, de la Peña, Dragan Stevanović, Edwards, Erds, Erdös, Erdös, Estrada, Estrada, Estrada, Gilbert, Goemans, Grone, Guillaume, Guillaume, Holme, Håstad, Michael, Mitzenmacher, Moon, Moon, Motwani, Newman, Newman, Pavlopoulos, Pavlopoulos, Penrose, Perron, Pillai, Platig, Pržulj, Roth, Roy, Sachs, Schweitzer, Watts   +42 more
core   +1 more source

Linearizing and Forecasting: A Reservoir Computing Route to Digital Twins of the Brain

Advanced Science, EarlyView.
A new approach uses simple neural networks to create digital twins of brain activity, capturing how different patterns unfold over time. The method generates and recovers key dynamics even from noisy data. When applied to fMRI, it predicts brain signals and reveals distinctive activity patterns across regions and individuals, opening possibilities for ...
Gabriele Di Antonio, Tommaso Gili, Andrea Gabrielli, Maurizio Mattia   +3 more
wiley   +1 more source

Covariance Blind Detection Method Based on Eigenvector in Cognitive Radio Network

Dianxin kexue, 2015
As the blind detection algorithm has the shortcoming that they need information about the channel and more than two cognitive users to detect the primary user,a new blind detection algorithm based on eigenvector using the difference of correlation ...
Yingxue Li, Jing Lei, Shiyuan Zhong, Chunming Huang, Chao Huang   +4 more
doaj  

Two Distinct Phonon Wave Effects Control Thermal Transport across the Coherent–Incoherent Regime in Superlattices

Advanced Science, EarlyView.
Thermal transport in smooth‐interface superlattices is studied using the phonon Wigner transport equation, which captures both particle‐like and wave‐like contributions. A minimum in cross‐plane thermal conductivity emerges with increasing period thickness, signaling a crossover from coherent to incoherent phonon transport.
Jin Yang, Jingyi Zhu, Alan J. H. McGaughey, Wee‐Liat Ong   +3 more
wiley   +1 more source