Results 21 to 30 of about 2,038,050 (333)
On bi-conservative hypersurfaces in the Lorentz-Minkowski 4-space $E_1^4$ [PDF]
Sahand Communications in Mathematical Analysis, 2023 In the 1920s, D. Hilbert has showed that the tensor of stress-energy, related to a given functional $\Lambda$, is a conservative symmetric bicovariant tensor $\Theta$ at the critical points of $\Lambda$, which means that div$\Theta =0$.
Firooz Pashaie
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An Acoustic Space-Time and the Lorentz Transformation in Aeroacoustics [PDF]
, 2014 In this paper we introduce concepts from relativity and geometric algebra to aeroacoustics. We do this using an acoustic space-time transformation within the framework of sound propagation in uniform flows.
A. Gregory +3 more
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A new perspective on spacetime 4D rotations and the SO(4) transformation group
Results in Physics, 2019 In quantum field theory, every conservation law is enforced by adequate symmetries. The Lorentz group, which represents two continuous symmetries: rotations in 3D Euclidean space and Lorentz boosts, generates conservation of the angular momentum tensor ...
Mikołaj Myszkowski
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Relativistic Bistatic Scattering of a High-Speed Moving Plasma Coated Object
International Journal of Antennas and Propagation, 2023 Accurate modeling of relativistic electromagnetic scattering characteristics from high-speed motion of plasma coated objects is crucial for the development of hypersonic aircraft and their applications in the identification and surveillance of moving ...
Pengcheng Ren +3 more
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The Relativistic Rotation Transformation and the Observer Manifold
Axioms, 2023 We show that relativistic rotation transformations represent transfer maps between the laboratory system and a local observer on an observer manifold, rather than an event manifold, in the spirit of C-equivalence.
Satyanad Kichenassamy
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Lorentz Transformation, Poincaré Vectors and Poincaré Sphere in Various Branches of Physics
Symmetry, 2018 In the frame of a generic language extended from the polarization theory—comprising the notions of Poincare vectors, Poincare sphere, and P-spheres—a geometric approach to Lorentz transformations alternative to the Minkowskian one is given.
T. Tudor
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The Lorentz Transformations [PDF]
Australian Journal of Physics, 1959 Sir Harold Jeffreys (1958) has asserted that my analysis of the clock paradox (Builder 1957) is based on concealed hypotheses; but the hypotheses to which he refers are ones that he claims are involved in the derivation of the Lorentz transformations and in the currently accepted methods of using them.
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Implications of an absolute simultaneity theory for cosmology and universe acceleration. [PDF]
PLoS ONE, 2014 An alternate Lorentz transformation, Absolute Lorentz Transformation (ALT), has similar kinematics to special relativity yet maintains absolute simultaneity in the context of a preferred reference frame.
Edward T Kipreos
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Local Lorentz transformation and exact spherically symmetric vacuum solutions in f(T) gravity theories [PDF]
, 2012 In this paper a non-diagonal, spherically symmetric, tetrad field that contains an arbitrary function, S(r), which corresponds to a local Lorentz transformation, is applied to the field equations of f(T) gravity theories.
G. Nashed
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Nuclear Physics B, 2016 In the first order formalism of gravity theories, there are some theories which are not Lorentz-diffeomorphism covariant. In the framework of such theories we cannot apply the method of conserved charge calculation used in Lorentz-diffeomorphism ...
M.R. Setare, H. Adami
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