Results 71 to 80 of about 99,723 (258)
Engineering Topological Phases with a Traveling‐Wave Spacetime Modulation
Laser &Photonics Reviews, EarlyView.Time‐varying systems have garnered considerable attention due to their unique potential in manipulating electromagnetic waves. Here, a novel class of topological spacetime crystals with a traveling‐wave modulation is introduced. By manipulating material anisotropy, one can engineer light angular momentum and non‐trivial topological phases characterized
João C. Serra, Mário G. Silveirinha
wiley +1 more source
No scalar-haired Cauchy horizon theorem in charged Gauss–Bonnet black holes
European Physical Journal C: Particles and FieldsRecently, a “no inner (Cauchy) horizon theorem” for static black holes with non-trivial scalar hairs has been proved in Einstein–Maxwell–scalar theories and also in Einstein–Maxwell–Horndeski theories with the non-minimal coupling of a charged (complex ...
Deniz O. Devecioğlu, Mu-In Park
doaj +1 more source
Analiza i Egzystencja, 2017 The main aim of this paper is to provide an interpretative application of Józef Życiński’s philosophical work. I claim that one can find in Życiński’s thought criteria for evaluating certain positions which use platonistic concepts in order to solve ...
Damian Luty
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Relativistic quantum motion of spin-0 particles under the influence of noninertial effects in the cosmic string spacetime [PDF]
, 2017 We study solutions for the Klein–Gordon equation with vector and scalar potentials of the Coulomb types under the influence of noninertial effects in the cosmic string spacetime.
L. C. N. Santos, C. C. Barros
semanticscholar +1 more source
Mathematical Methods in the Applied Sciences, EarlyView.ABSTRACT Consider wave equations with time derivative nonlinearity and time‐dependent propagation speed which are generalized versions of the wave equations in the Friedmann–Lemaître–Robertson–Walker (FLRW) spacetime, the de Sitter spacetime and the anti‐de Sitter space time.
Kimitoshi Tsutaya, Yuta Wakasugi
wiley +1 more source
Rotating black holes in a viable Lorentz-violating gravity: finding exact solutions without tears
European Physical Journal C: Particles and FieldsWe introduce a two-step procedure for finding Kerr-type rotating black hole solutions without tears. Considering the low-energy sector of Hořava gravity as a viable Lorentz-violating gravity in four dimensions which admits a different speed of gravity ...
Deniz O. Devecioğlu, Mu-In Park
doaj +1 more source
Violation of bound on chaos for charged probe in Kerr-Newman-AdS black hole
Journal of High Energy Physics, 2022 We investigate the conjectured bound on the Lyapunov exponent for a charged particle with angular motion in the Kerr-Newman-AdS black hole. The Lyapunov exponent is calculated based on the effective Lagrangian.
Bogeun Gwak +3 more
doaj +1 more source
Light deflection by a rotating global monopole spacetime [PDF]
, 2017 We investigate the deflection of light by a rotating global monopole spacetime and a rotating Letelier spacetime in the weak deflection approximation. To this end, we apply the Gauss-Bonnet theorem to the corresponding osculating optical geometries and ...
K. Jusufi +3 more
semanticscholar +1 more source
Superdensity operators for spacetime quantum mechanics [PDF]
Journal of High Energy Physics, 2017 A bstractWe introduce superdensity operators as a tool for analyzing quantum information in spacetime. Superdensity operators encode spacetime correlation functions in an operator framework, and support a natural generalization of Hilbert space ...
Jordan S. Cotler +3 more
semanticscholar +1 more source
Ultrabroadband Spacetime Nanoscopy of Terahertz Polaritons in a van der Waals Cavity
Small, EarlyView.This work introduces SYnchrotron SpaceTimE Mapping (SYSTEM), which captures real‐time evolution of polariton wave packets with ∼10 nm spatial and sub‐100 fs temporal resolution across an ultrabroadband 5 to 50 THz range. Here, SYSTEM directly visualizes the creation, interference, and decay of multiple high‐quality Fabry‐Pérot phonon polariton cavity ...
Lukas Wehmeier +17 more
wiley +1 more source