Results 81 to 90 of about 51,175 (198)
The Hall Effects of Vortex Light in Optical Materials
Advanced Photonics Research, Volume 6, Issue 10, October 2025.This article models optical materials as curved spacetime to investigate light propagation, finding that the deflection angle for light with spin σ and intrinsic orbital angular momentum ℓ follows ϑ ∝ 2σ + ℓ$\vartheta \propto 2 \text{&sgr; } + ℓ$.
Wei‐Si Qiu +3 more
wiley +1 more source
Properties of gravity near the Schwarzschild radius
, 2014 The radius of the observable region of the Universe is of the order of its Schwarzschild radius. Due to the spherical symmetry, this allows to check the properties of the gravitational force in the vicinity of the Schwarzschild radius by comparing the theoretical and observed Hubble diagram at high redshifts.
openaire +2 more sources
Thermal Infrared Spectrometers for the Polar Radiant Energy in the Far‐Infrared Experiment (PREFIRE)
Earth and Space Science, Volume 12, Issue 10, October 2025.Abstract The Polar Radiant Energy in the Far‐InfraRed Experiment (PREFIRE) was selected by NASA to fly two miniaturized Thermal InfraRed Spectrometers (TIRS) capable of distinguishing the spectral signatures of surface and atmospheric properties in Earth's polar regions.
Brian J. Drouin +18 more
wiley +1 more source
A Structure Model for Black Holes: Atomic-Like Structure, Quantization and the Minimum Schwarzschild Radius [PDF]
Progress of Theoretical Physics, 2005 18 pages, 3 ...
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Communications on Pure and Applied Mathematics, Volume 78, Issue 9, Page 1656-1702, September 2025.Abstract Let (Mn,g)$(M^n,g)$ be a complete Riemannian manifold which is not isometric to Rn$\mathbb {R}^n$, has nonnegative Ricci curvature, Euclidean volume growth, and quadratic Riemann curvature decay. We prove that there exists a set G⊂(0,∞)$\mathcal {G}\subset (0,\infty)$ with density 1 at infinity such that for every V∈G$V\in \mathcal {G}$ there ...
Gioacchino Antonelli +2 more
wiley +1 more source
European Physical Journal C: Particles and Fields, 2020 It is well known that quantum effects may lead to removal of the intrinsic singularity point of back holes. Also, the quintessence scalar field is a candidate model for describing late-time acceleration expansion.
Kourosh Nozari +2 more
doaj +1 more source
Two Micron‐Size Dark Dimensions
Fortschritte der Physik, Volume 73, Issue 8, August 2025.Abstract Two extra dimensions of micron scale might simultaneously address the gauge and cosmological hierarchy problems. In this paper various observational bounds in scenarios with one and two large extra dimensions are examined, to see if they are compatible with the micron scale.
Luis A. Anchordoqui +2 more
wiley +1 more source
Bound-unbound universality and the all-order semi-classical wave function in Schwarzschild
Journal of High Energy PhysicsWe present a systematic method for analytically computing time-dependent observables for a relativistic probe particle in Coulomb and Schwarzschild backgrounds.
Majed Khalaf +2 more
doaj +1 more source
Black Holes, Space-Filling Chains and Random Walks
, 2006 Many approaches to a semiclassical description of gravity lead to an integer black hole entropy. In four dimensions this implies that the Schwarzschild radius obeys a formula which describes the distance covered by a Brownian random walk.
Abramowitz M. +10 more
core +1 more source
A nonmetric theory of gravitation that is nonsingular at the Schwarzschild radius
, 2015 8 pages, 2 ...
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