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GEODESICS: 作品数：41被引量：23H指数：2; 导出分析报告; 相关领域：理学更多>>; 相关作者：戴建华更多>>; 相关机构：上海市气象局江苏省测绘工程院华东师范大学更多>>; 相关期刊：《Journal of Mathematical Research with Applications》《Science China Mathematics》《Chinese Physics Letters》《Chinese Annals of Mathematics,Series B》更多>>; 相关基金：国家自然科学基金国家重点基础研究发展计划更多>>

Schwarzschild black hole surrounded by a cloud of strings in the background of perfect fluid dark matter: 《Chinese Physics C》2025年第2期220-236,共17页B.Hamil B.C.Lütfüoğlu; B.C.Lütfüoğlu is grateful to Excellence project PřF UHK 2211/2023-2024 for the financial support。; This manuscript investigates a Schwarzschild black hole surrounded by perfect fluid dark matter embedded in a cloud of strings.The effects of its surroundings on thermodynamics,timelike and null geodesics,shadows,and ...; 关键词：clouds of strings perfect fluid dark matter Schwarzschild black hole THERMODYNAMICS GEODESICS SHADOWS quasinormal modes

Dirac-geodesics with curvature term: 《Science China Mathematics》2025年第2期433-446,共14页Qun Chen Mingwei Zhang; Dirac-geodesics with curvature term are Dirac-harmonic maps with curvature term from onedimensional domains. In this paper, we first describe the structure of Dirac-geodesics with curvature term in surfaces and give s...; 关键词：Dirac-geodesic Dirac-harmonic map CURVATURE heat flow existence

A Study on the Second Order Tangent Bundles over Bi-Kählerian Manifolds: 《Chinese Annals of Mathematics,Series B》2024年第5期777-804,共28页Nour Elhouda DJAA Aydin GEZER Abderrahim ZAGANE; This paper aims to study the Berger type deformed Sasaki metric g_(BS)on the second order tangent bundle T^(2)M over a bi-Kählerian manifold M.The authors firstly find the Levi-Civita connection of the Berger type def...; 关键词：Berger type deformed Sasaki metric Bi-Kählerian structure GEODESICS Harmonicity Riemannian curvature tensor Second order tangent bundle

Principal Equatorial Null Geodesic Congruences in the Kerr Metric, and Their Quantum Propagators: 《Journal of High Energy Physics, Gravitation and Cosmology》2024年第3期906-917,共12页Josué G. Mateos Trujillo Miguel Socolovsky; Using the Raychaudhuri equation, we associate quantum probability amplitudes (propagators) to equatorial principal ingoing and outgoing null geodesic congruences in the Kerr metric. The expansion scalars diverge at th...; 关键词：Kerr Metric Principal Null Geodesics PROPAGATORS

An efficient algorithm for approximate Voronoi diagram construction on triangulated surfaces被引量：1: 《Computational Visual Media》2023年第3期443-459,共17页Wenlong Meng Pengbo Bo Xiaodong Zhang Jixiang Hong Shiqing Xin Changhe Tu; supported in part by the Youth Teacher Development Foundation of Harbin Institute of Technology(IDGA10002143);the National Natural Science Foundation of China(62072139,62272277,62072284);the National Key R&D Program of China(2021YFB1715900);the Joint Funds of the National Natural Science Foundation of China(U22A2033).; Voronoi diagrams on triangulated surfaces based on the geodesic metric play a key role in many applications of computer graphics.Previous methods of constructing such Voronoi diagrams generally depended on having an e...; 关键词：geodesic Voronoi diagrams(GVDs) triangular surfaces mesh surfaces approximate geodesics Apollonius diagrams

Spherical and Circular Non-Equatorial Photon Orbits around Kerr Black Holes: 《Journal of High Energy Physics, Gravitation and Cosmology》2023年第3期888-896,共9页Leo Morgovsky; By analytically solving the equation of azimuthal null geodesics for spherical photon trajectories, a parametric representation of the corresponding segment of the orbit is obtained. The solution parameter is the lati...; 关键词：Black Holes Kerr Metric Photon Trajectories Null Geodesics Orbits Instability

Direct and Exact Description of Null Geodesics in Schwarzschild Spacetime: 《Journal of High Energy Physics, Gravitation and Cosmology》2023年第1期234-244,共11页Leo Morgovsky; Null geodesics for massless particles in Schwarzschild spacetime are obtained by direct integration of the trajectory equation in spatial coordinates without transformation to the inverse space. The results are classi...; 关键词：Black Holes Schwarzschild Metric Photon Trajectory Hawking Radiation

Null Geodesics, Raychaudhuri Equation, Trapped Surfaces, and Penrose Singularity Theorem: 《Journal of High Energy Physics, Gravitation and Cosmology》2022年第3期536-557,共22页Miguel Socolovsky; We review the concept of congruence of null geodesics, the Raychaudhuri equation for the expansion, its harmonic oscillator version and associated “quantum” propagator, the role of the equation in the derivation of ...; 关键词：Null Geodesics Trapped Surfaces Singularity Theorem

Schwarzschild Quantum Light Geodesics Metric: A Pair of BH-Inner WH被引量：1: 《Journal of High Energy Physics, Gravitation and Cosmology》2021年第3期1089-1101,共13页Jean Perron; In this article we hypothesized that the arrow of time and space evolve in a discontinuous way in the form of quanta (t=nt_p, s=ml_p). We applied this reasoning to the light ge...; 关键词：Black Hole White Hole Schwarzschild Metric Quantum Spacetime Tunnel Effect

Universal time delay in static spherically symmetric spacetimes for null and timelike signals: 《Chinese Physics C》2021年第8期28-35,共8页Haotian Liu Junji Jia; Supported by the National Natural Science Foundation of China(11504276);MOST China(2014GB109004)。; A perturbative method of computing the total travel time of both null and lightlike rays in arbitrary static spherically symmetric spacetimes in the weak field limit is proposed.The resultant total time takes a quasi-...; 关键词：time delay static spherically symmetric gravitational lensing timelike geodesics

GEODESICS