Results 61 to 70 of about 13,825 (298)
On instanton effects in the operator product expansion
Journal of High Energy Physics, 2017 We revisit the computation of instanton effects to various correlation functions in N = 4 $$ \mathcal{N}=4 $$ SYM and clarify a controversy existing in the literature regarding their consistency with the OPE and conformal symmetry.
Luis F. Alday, Gregory P. Korchemsky
doaj +1 more source
Study on Birkhoff orthogonality and symmetry of matrix operators
Open Mathematics, 2023 We focus on the problem of generalized orthogonality of matrix operators in operator spaces. Especially, on ℬ(l1n,lpn)(1≤p≤∞){\mathcal{ {\mathcal B} }}\left({l}_{1}^{n},{l}_{p}^{n})\left(1\le p\le \infty ), we characterize Birkhoff orthogonal elements of
Wei Yueyue, Ji Donghai, Tang Li
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Advanced Engineering Materials, EarlyView.Selenium was incorporated into a sol–gel‐derived bioactive glass to enable sustained therapeutic ion release. The selenium‐containing glass preserved bioactivity while selectively inducing cytotoxicity in osteosarcoma cells and maintaining osteoblastic viability.
Breno Rocha Barrioni +7 more
wiley +1 more source
Conformal symmetry of QCD in d-dimensions
Physics Letters B, 2019 QCD in d=4−2ϵ space-time dimensions possesses a nontrivial critical point and there are good reasons to expect that this theory restricted to the gauge-invariant subsector is conformally invariant.
V.M. Braun +3 more
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Phase Field Failure Modeling: Brittle‐Ductile Dual‐Phase Microstructures under Compressive Loading
Advanced Engineering Materials, EarlyView.The approach by Amor and the approach by Miehe and Zhang for asymmetric damage behavior in the phase field method for fracture are compared regarding their fitness for microcrack‐based failure modeling. The comparison is performed for the case of a dual‐phase microstructure with a brittle and a ductile constituent.
Jakob Huber, Jan Torgersen, Ewald Werner
wiley +1 more source
Differential symmetry operators first order canonical differential equations
Известия высших учебных заведений. Поволжский регион: Физико-математические наукиBackground. Symmetries play an important role in mechanics and theoretical physics. The main models in these sciences are differential equations and systems of equations.
A.I. Fomin, V.I. Titarenko
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Symmetries and Bäcklund Transformations for the Modified Veronese Web Equation
AppliedMathThis paper investigates recursion operators and nonlocal symmetry structures for the modified Veronese web equation. The novelty of the work lies in the explicit construction of a direct recursion operator and its inverse in the tangent-covering ...
Qingli Luo, Zhe Wang, Yufeng Zhang
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Grid systems monitoring and assessment using finite state machines with median symmetry operators
, 2007 International audienceThis paper presents a finite state machine approach of grid system, for tracking the state of involved components in a given behavior of this system.
Babiga Birregah +8 more
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Karl Popper and the Mechanisms of Hydrogen Embrittlement
Advanced Engineering Materials, EarlyView.Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley +1 more source
Separability and Symmetry Operators for Painlevé Metrics and their Conformal Deformations
, 2019 42 pagesInternational audiencePainlevé metrics are a class of Riemannian metrics which generalize the well-known separable metrics of Stäckel to the case in which the additive separation of variables for the Hamilton-Jacobi equation is achieved in terms ...
Kamran, Niky +2 more
core +3 more sources