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引力电、引力磁与引力波
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作者 何孝凯 曹周键 《大学物理》 2023年第12期33-36,共4页
在很多教科书中,引力波被描述为平直时空的微扰.弱场近似下引力相互作用可以描述为类似麦克斯韦方程的形式,对应引力电和引力磁的概念.这里的弱引力场自然对应平直时空的微扰.由于引力波和引力电、引力磁都可对应于平直时空的微扰,我们... 在很多教科书中,引力波被描述为平直时空的微扰.弱场近似下引力相互作用可以描述为类似麦克斯韦方程的形式,对应引力电和引力磁的概念.这里的弱引力场自然对应平直时空的微扰.由于引力波和引力电、引力磁都可对应于平直时空的微扰,我们很自然会联想引力波和引力电、引力磁的关系.本文分析表明,引力电、引力磁对应引力源近场区的行为,但无法描述远场区的波动行为.也就是说,通常文献中的引力电、引力磁不能描述引力波行为. 展开更多
关键词 引力波 引力电 引力磁 后牛顿近似 横向无迹规范
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线性引力论的引力磁分量及其磁效应 被引量:2
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作者 郝迪 郭三栋 +1 位作者 马智远 惠宇廷 《物理学报》 SCIE EI CAS CSCD 北大核心 2020年第13期37-49,共13页
根据广义相对论,弱场近似条件下引力场中不仅含有经典的牛顿引力场,还存在一种类比于磁场概念的引力“磁”场,引力磁场的命名借用了电动力学中磁场的概念.为了研究引力磁场的物理性质和它引发的一些关联效应,本文首先从线性爱因斯坦方... 根据广义相对论,弱场近似条件下引力场中不仅含有经典的牛顿引力场,还存在一种类比于磁场概念的引力“磁”场,引力磁场的命名借用了电动力学中磁场的概念.为了研究引力磁场的物理性质和它引发的一些关联效应,本文首先从线性爱因斯坦方程出发,利用相似变换的方法从方程的二级张量场中分解出了引力的“磁”分量并定义了引力磁场;在此基础上考虑了一种通有匀速流体的环状微管模型,通过电动力学的分析方法研究了远离微管区域的引力磁场分布特征,重点在计算过程中改进了以往对这类环状模型引力磁场的计算方法,表明了这类模型的引力磁场远场分布模式与磁偶极子磁场的远场分布类似;之后利用类磁场的性质研究了引力磁场的动力学特征,首次研究了测试粒子在线性时变引力磁场及余弦时变引力磁场中的运动规律,同时通过设计一种具有双层结构且通有加速流动流体的环状微管模型改进了前人对时变引力磁场中引力感应、惯性系拖曳现象的研究办法,从更清晰的角度用更简单的数学通过引力电磁理论研究和展示了引力感应现象和广义相对论中的惯性系拖曳现象.全文为引力磁场及其关联效应的研究提供了一些新的方法和思路. 展开更多
关键词 线性引力论 环状微管模型 引力磁场 引力磁效应
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Generalized gravitomagnetic field and gravitational waves 被引量:1
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作者 XiaoKai He JiLiang Jing ZhouJian Cao 《Science China(Physics,Mechanics & Astronomy)》 SCIE EI CAS CSCD 2019年第11期138-141,共4页
Synge was the first to derive the geodesic deviation entirely mathematically (1)Only later did people realize its importance [2] for describing the physical behavior of curved spacetime [3], particularly that it can u... Synge was the first to derive the geodesic deviation entirely mathematically (1)Only later did people realize its importance [2] for describing the physical behavior of curved spacetime [3], particularly that it can unambiguously manifest gravitational waves (4, 5)The geodesic deviation relates purely to the 'electric' part of a curved spacetime, while the complementary 'magnetic' part is related to the way gyroscopes adapt to geodesics. For Ricci flat spacetimes. 展开更多
关键词 GENERALIZED gravitomagnetic field and GRAVITATIONAL WAVES
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Determination of Gravitomagnetic Field Through GRBs or X-ray Pulsars
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作者 WU Ning ZHANG Da-Hua 《Communications in Theoretical Physics》 SCIE CAS CSCD 2006年第5期858-860,共3页
In gauge theory of gravity, there is direct coupling between the spin of a particle and gravitomagnetic field, which will affect Landau level. In the surface of a neutron star or near a black hole, the coupling energy... In gauge theory of gravity, there is direct coupling between the spin of a particle and gravitomagnetic field, which will affect Landau level. In the surface of a neutron star or near a black hole, the coupling energy between spin and gravitomagnetic field can be large and detectable. Precise measurement of the position of spectrum lines of the corresponding emission or absorption can help us to determine the gravitomagnetic field and electromagnetic field simultaneously. The ratio △ Ee/△Ep can be served as a quantitative criteria of black hole. In GRBs or X-ray pulsar, absorption spectral lines of electron were observed. If the absorption spectral lines of electron, neutron and proton can be observed simultaneously, using the method given in this paper, we can determine the gravitomagnetic field in the surface of the star, and discriminate black hole from neutron star. 展开更多
关键词 gamma ray burst black holes gravitomagnetic field quantum effects of gravity
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The Primordial Principle of Self-Interaction 被引量:3
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作者 Edwin Eugene Klingman 《Journal of Modern Physics》 2021年第2期65-81,共17页
The Standard Model of Particle Physics treats four fields—the gravitational, electromagnetic, weak and strong fields. These fields are assumed to converge to a single field at the big bang, but the theory has failed ... The Standard Model of Particle Physics treats four fields—the gravitational, electromagnetic, weak and strong fields. These fields are assumed to converge to a single field at the big bang, but the theory has failed to produce this convergence. Our theory proposes<em> one </em>primordial field and analyzes the evolution of this field. The key assumption is that <em>only</em> the primordial field exists—if any change is to occur, it must be based upon self-interaction, as there is nothing other than the field itself to interact with. This can be formalized as the <em>Principle</em> <em>of </em><em>Self-interaction</em> and the consequences explored. I show that this leads to the linearized Einstein field equations and discuss the key ontological implications of the theory. 展开更多
关键词 SELF-INTERACTION Principles of Physics Electromagnetism gravitomagnetISM “Weak field Approximation Kasner Metric Iterated Solutions Gauge Theory of Gravity Primordial Principle
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