Results 21 to 30 of about 34,517 (164)
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
wiley +1 more source
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
wiley +1 more source
Artificial Intelligence and Advanced Materials
Advanced Materials, Volume 35, Issue 23, June 8, 2023., 2023 Artificial intelligence in general and machine learning in particular are gaining ever more importance in science and technology. In materials science, they are taking over tedious screening tasks and helping design and discover materials based on both explicit and tacit previous knowledge possessed by the scientist.
Cefe López
wiley +1 more source
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
doaj +1 more source
Geochemistry, Geophysics, Geosystems, Volume 24, Issue 3, March 2023., 2023 Abstract Giant volcanic eruptions have the potential to overturn civilizations. Yet, the driving mechanism and timescale over which batholithic magma reservoirs transition from non‐eruptible crystal mush to mobile melt‐dominated stages and our capacity to detect a pending super‐eruption remain obscure.
G. Weber, J. Blundy, D. Bevan
wiley +1 more source
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
doaj +1 more source
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
core +3 more sources
Gravitational wave lensing beyond general relativity: Birefringence, echoes, and shadows [PDF]
Physical Review D, 2020 Gravitational waves (GW), as light, are gravitationally lensed by intervening matter, deflecting their trajectories, delaying their arrival and occasionally producing multiple images.
J. Ezquiaga, M. Zumalacárregui
semanticscholar +1 more source
IS THERE A DISTINCTIVE QUANTUM THEOLOGY?
Zygon®, Volume 58, Issue 1, Page 265-284, March 2023., 2023 Abstract Quantum mechanics (QM) is a favorite area of physics to feature in “science and religion” discussions. We argue that this is at least partly because the arcane results of QM can be deployed to make big theological claims by the linguistic sleight of hand of “register switching”—sliding imperceptibly from technical into everyday language using ...
Wilson C. K. Poon, Tom C. B. McLeish
wiley +1 more source
Journal of Geophysical Research: Atmospheres, Volume 127, Issue 10, 27 May 2022., 2022 Abstract Stratospheric injections of carbonaceous aerosols and combustion gases by extreme wildfires have become increasingly common. Recent “megafires,” particularly large and intense fires, delivered particulate burdens to the lower stratosphere comparable to those of moderate volcanic eruptions.
Gennaro D’Angelo +4 more
wiley +1 more source