Results 151 to 160 of about 1,202,632 (386)
The geometric of like-Einstein metrics
, 2011 O objetivo deste trabalho à estudar a geometria das mÃtricas tipo-Einstein (solitons de Ricci, quase solitons de Ricci e mÃtricas quasi-Einstein). Mais especificamente, vamos obter equaÃÃes de estrutura, exemplos, fÃrmulas integrais e estimativas que ...
Ernani de Sousa Ribeiro Junior
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Riemannian manifolds with Einstein-like metrics [PDF]
, 1985 In this thesis, we investigate properties of manifolds with Riemannian metrics which satisfy conditions more general than those of Einstein metrics, including the latter as special cases. The Einstein condition is well known for being the Euler- Lagrange
Desa, Zul Kepli Bin Mohd
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On non-gradient $(m,\rho)$-quasi-Einstein contact metric manifolds. [PDF]
, 2020 Dhriti Sundar Patra, Vladimir Rovenski
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Photonic‐Enabled Energy‐Efficient Transparent Neuromorphic Computing Devices: A Review
Advanced Science, EarlyView.Transparent photonic neuromorphic computing devices merge optics and brain‐inspired computing to overcome von Neumann bottlenecks with ultrafast, low‐energy processing. By exploiting transparent oxides, 2D materials, phase‐change materials, and hybrid heterostructures, these platforms enable photonic synapses, memory, and logic for see‐through edge ...
Shuvaraj Ghosh +8 more
wiley +1 more source
The Explicit Construction of Einstein Finsler Metrics with Non-Constant Flag Curvature
Symmetry, Integrability and Geometry: Methods and Applications, 2009 By using the Hawking Taub-NUT metric, this note gives an explicit construction of a 3-parameter family of Einstein Finsler metrics of non-constant flag curvature in terms of navigation representation.
Enli Guo, Xiaohuan Mo, Xianqiang Zhang
doaj +1 more source
On the Stability of Kähler-Einstein Metrics
, 2005 Using spin$^c$ structure we prove that Kähler-Einstein metrics with nonpositive scalar curvature are stable (in the direction of changes in conformal structures) as the critical points of the total scalar curvature functional. Moreover if all infinitesimal complex deformation of the complex structure are integrable, then the Kähler-Einstein metric is a
Dai, Xianzhe +2 more
openaire +2 more sources
Formal Theory of Cornered Asymptotically Hyperbolic Einstein Metrics [PDF]
, 2018 Stephen E. McKeown
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Field‐Frustrated Cooperative Distortions: Suppressing Jahn‐Teller Ordering via Microwave Annealing
Advanced Science, EarlyView.Microwave annealing decouples local Jahn‐Teller distortions from long‐range cooperative ordering in CuFe2O4, stabilizing a metastable cubic phase that remains locally distorted yet globally symmetry‐frustrated. Synchrotron XRD, PDF, XPS, and in situ thermal cycling reveal how non‐equilibrium MW‐phonon interactions suppress cooperative orbital‐lattice ...
Daryoosh Vashaee, Kelvin Dsouza
wiley +1 more source
Features of the partition function of a Λ > 0 universe
Journal of High Energy PhysicsWe consider properties of the gravitational path integral, $${\mathcal{Z}}_{\text{grav}}$$ , of a four-dimensional gravitational effective field theory with Λ > 0 at the quantum level.
Dionysios Anninos +3 more
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On rigidity of quasi-Einstein metrics
, 2017 Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPESIn this work, we will present some concepts of quasi-Einstein metrics. From this, we will enunciate and demonstrate rigidity results for quasi-Einstein metrics until we have enough ...
Borges, Laena Furtado
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