Results 41 to 50 of about 165,991,386 (194)
Teleparallel axions and cosmology
European Physical Journal C: Particles and Fields, 2021 We consider the most general teleparallel theory of gravity whose action is a linear combination of the five scalar invariants which are quadratic in the torsion tensor.
Manuel Hohmann, Christian Pfeifer
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Visualizing High-Order Symmetric Tensor Field Structure with Differential Operators
Journal of Applied Mathematics, 2011 The challenge of tensor field visualization is to provide simple and comprehensible representations of data which vary both directionally and spatially. We explore the use of differential operators to extract features from tensor fields.
Tim McGraw +3 more
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Higher gauge theories based on 3-groups
Journal of High Energy Physics, 2019 We study the categorical generalizations of a BF theory to 2BF and 3BF theories, corresponding to 2-groups and 3-groups, in the framework of higher gauge theory.
T. Radenković, M. Vojinović
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Sources for generalized gauge fields [PDF]
Physical Review D, 2013 Generalized gauge fields are tensor fields with mixed symmetries. For gravity and higher spins in dimensions greater than four, the fundamental field in the "magnetic representation" is a generalized gauge field. It is shown that the analog of a point source for a generalized gauge field is a special type of brane whose worldsheet has another brane ...
Bunster, Claudio, Henneaux, Marc
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East European Journal of Physics, 2018 The solutions of generalized Klein-Gordon equations are considered. The generalizations of the Klein-Gordon equation allow one to derive convergent integrals for the Green functions of these equations.
Yu. V. Kulish
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Generalized rigid elements in fields [PDF]
Pacific Journal of Mathematics, 1987 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Asymptotic symmetries of three-dimensional black strings
Journal of High Energy Physics, 2019 We determine a consistent phase space for a theory consisting in the Einstein-Hilbert action coupled to matter fields (dilaton, one-form, two-form) and containing three-dimensional black strings (the Horne-Horowitz solution and generalizations thereof ...
Stéphane Detournay +2 more
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Classical observer form for discrete-time nonlinear system: MIMO case [PDF]
Proceedings of the Estonian Academy of SciencesThe paper addresses the problem of transforming multi-input multi-output discrete-time nonlinear state equations into the classical observer form using state transformation.
Arvo Kaldmäe +4 more
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Fluid-electromagnetic helicities and knotted solutions of the fluid-electromagnetic equations
Journal of High Energy Physics, 2022 In this paper we consider an Euler fluid coupled to external electromagnetism. We prove that the Hopfion fluid-electromagnetic knot, carrying fluid and electromagnetic (EM) helicities, solves the fluid dynamical equations as well as the Abanov Wiegmann ...
Horatiu Nastase, Jacob Sonnenschein
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On a class of selection rules without group actions in field theory and string theory
SciPost PhysicsWe discuss a class of selection rules which i) do not come from group actions on fields, ii) are exact at tree level in perturbation theory, iii) are increasingly violated as the loop order is raised, and iv) eventually reduce to selection rules ...
Justin Kaidi, Yuji Tachikawa, Hao Y. Zhang
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