Results 11 to 20 of about 12,289 (137)
Gravitational lensing and tunneling of mechanical waves in synthetic curved spacetime
Physical Review Research, 2023 Black holes are considered among the most fascinating objects that exist in our universe since in the classical formalism nothing, not even light, can escape from their vicinity due to gravity.
Sayan Jana, Lea Sirota
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Journal of High Energy Physics, 2020 We investigate the possible existence of graviballs, a system of bound gravitons, and show that two gravitons can be bound together by their gravitational interaction.
B. Guiot, A. Borquez, A. Deur, K. Werner
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Global properties of gravitational lens maps in a Lorentzian manifold setting [PDF]
, 2000 In a general-relativistic spacetime (Lorentzian manifold), gravitational lensing can be characterized by a lens map, in analogy to the lens map of the quasi-Newtonian approximation formalism.
Perlick, Volker
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Light bending and gravitational lensing in Brans-Dicke theory
Physics Letters B, 2019 As an important candidate theory of gravity, Brans-Dicke theory has been widely studied. In this paper, we investigate light bending and gravitational lensing by compact objects in Brans-Dicke theory in weak gravitational field.
Xiaojun Gao, Shupeng Song, Jinsong Yang
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Weak gravitational lensing of finite beams [PDF]
, 2017 The standard theory of weak gravitational lensing relies on the infinitesimal light beam approximation. In this context, images are distorted by convergence and shear, the respective sources of which unphysically depend on the resolution of the ...
Fleury, Pierre +2 more
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Fortschritte der Physik, Volume 71, Issue 8-9, September 2023., 2023 Abstract The momentum and Hamiltonian constraints of vacuum Einstein equations, within the Bowen‐York formalism, for two interacting black holes in close separation, with anti‐parallel spins and anti‐parallel linear momenta is studied. An analytical solution using perturbation theory is given.
Emel Altas, Emine Ertugrul, Bayram Tekin
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Multiple imaging by gravitational waves [PDF]
, 1997 Gravitational waves act like lenses for the light propagating through them. This phenomenon is described using the vector formalism employed for ordinary gravitational lenses, which was proved to be applicable also to a non-stationary spacetime, with the
Braginsky V. B. +9 more
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Advanced Photonics Research, Volume 4, Issue 7, July 2023., 2023 Combined with the polarization state of light, orbital angular momentum (OAM) can be utilized as a degree of freedom to selectively excite the desired multipoles in nanoparticles. Different scattering characteristics of the excited modes result in interesting features in the imparted optical forces which is of importance in various applications ...
Mohammad Mojtaba Sadafi +3 more
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Gravitational lensing by charged black hole in regularized 4D Einstein–Gauss–Bonnet gravity
European Physical Journal C: Particles and Fields, 2020 Among the higher curvature gravities, the most extensively studied theory is the so-called Einstein–Gauss–Bonnet (EGB) gravity, whose Lagrangian contains Einstein term with the GB combination of quadratic curvature terms, and the GB term yields ...
Rahul Kumar +2 more
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The Confrontation between General Relativity and Experiment [PDF]
Living Reviews in Relativity, 2014 Clifford M Will
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