Results 11 to 20 of about 108,841 (307)

On bi-conservative hypersurfaces in the Lorentz-Minkowski 4-space $E_1^4$ [PDF]

open access: yesSahand 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
doaj   +1 more source

Lorentz-transformation and Galileo-transformation Windows [PDF]

open access: yes, 2014
We define Lorentz-transformation windows as windows that change the direction of transmitted light rays like a Lorentz transformation. Similarly, Galileo-transformation windows change the direction of transmitted light rays like a Galileo transformation.
Courtial, Johannes   +3 more
core   +1 more source

NEW METHOD FOR DERIVATION OF LORENTZ TRANSFORMATION

open access: yesJournal of Engineering, 2003
in the modern field of heavy ion atomic physics, determined through Lorentz transformation [W. Greiner 1997]. At high energies one must investigate the relative wave equations. This means equations, which are invariant under Lorenz transformation.
O.M. Al-Kazalch
doaj   +1 more source

A new perspective on spacetime 4D rotations and the SO(4) transformation group

open access: yesResults 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
doaj   +1 more source

Relativistic Bistatic Scattering of a High-Speed Moving Plasma Coated Object

open access: yesInternational 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
doaj   +1 more source

The Relativistic Rotation Transformation and the Observer Manifold

open access: yesAxioms, 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
doaj   +1 more source

The Lorentz Transformations [PDF]

open access: yesAustralian 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.
openaire   +1 more source

Geometrical Interpretation of Space Contraction in Two-dimensional Lorentz Transformation

open access: yesBibechana
This paper points out that the transformation equations for the spatial and temporal coordinates between two frames of reference in the existing generally accepted version of the Lorentz transformation are deficient, since transformation equations are ...
Chandra Bahadur Khadka
doaj   +3 more sources

Implications of an absolute simultaneity theory for cosmology and universe acceleration. [PDF]

open access: yesPLoS 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
doaj   +1 more source

Black hole entropy in the Chern–Simons-like theories of gravity and Lorentz-diffeomorphism Noether charge

open access: yesNuclear 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
doaj   +1 more source

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