Results 11 to 20 of about 63,545 (269)
Curvature tensor for the spacetime of general relativity [PDF]
International Journal of Geometric Methods in Modern Physics, 2017 In the differential geometry of certain [Formula: see text]-structures, the role of [Formula: see text]-curvature tensor is very well known. A detailed study of this tensor has been made on the spacetime of general relativity. The spacetimes satisfying Einstein field equations with vanishing [Formula: see text]-tensor have been considered and the ...
Ahsan, Zafar, Ali, Musavvir
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New Journal of Physics, 2020 Here we present a general approach for the description for the frequency dependent dielectric tensor coefficients for optically anisotropic materials.
C Sturm +4 more
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Persistence–of–straining and polymer alignment in viscoelastic turbulence
Applications in Engineering Science, 2020 Drag reduction in turbulent flows by the addition of polymers is a phenomenon that has a variety of applications in the engineering. The highly nonlinear interactions between the turbulent flow and the polymers in the polymeric solution still impose ...
Anselmo S. Pereira +2 more
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Vestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2021 The paper deals with the problems of ordering the reper orientations for a micropolar continuum immersed in an external plane space. Based on the concept of an elementary tensor volume (area) \(M\)-cells, an algorithm for comparing and matching external ...
Evgenii V. Murashkin, Yuri N. Radayev
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Journal of Petroleum Exploration and Production Technology, 2019 Relative permeability is a tensorial property directly dependent on absolute permeability tensor which has been taking both symmetric and non-symmetric (full tensor) forms in the literature.
Mohammad Sedaghat +2 more
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Robust brain network identification from multi-subject asynchronous fMRI data
NeuroImage, 2021 We describe a novel method for robust identification of common brain networks and their corresponding temporal dynamics across subjects from asynchronous functional MRI (fMRI) using tensor decomposition.
Jian Li +3 more
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Error Analysis and Correction of a Downhole Rotating Magnetic Full-Tensor Gradiometer
IEEE Access, 2020 Compared with ground magnetic measurement and aeromagnetic survey, downhole magnetic measurements can provide more abundant and accurate distribution information of ore deposits.
Yangyi Sui +4 more
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Distinguishing Random and Black Hole Microstates
PRX Quantum, 2021 In this work, we study the distinguishability of random states drawn from the Wishart ensemble as well as black hole microstates. We compute the relative entropy and many generalizations, including the Petz Rényi relative entropy, sandwiched Rényi ...
Jonah Kudler-Flam +2 more
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The space generated by metric and torsion tensors, derivation of Einstein-Hilbert equation
Pracì Mìžnarodnogo Geometričnogo Centru, 2014 This paper is devoted to the derivation of field equations in space with the geometric structure generated by metric and torsion tensors. We also study the geometry of the space are generated jointly and agreed by the metric tensor and the torsion tensor.
Николай Иванович Яременко
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Gravitational Waves in Scalar–Tensor–Vector Gravity Theory
Universe, 2021 In this paper, we study the properties of gravitational waves in the scalar–tensor–vector gravity theory. The polarizations of the gravitational waves are investigated by analyzing the relative motion of the test particles.
Yunqi Liu +3 more
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