搜索到2698篇“ SCHWARZSCHILD“的相关文章
The Gravitational Potential and the Gravitational Force According to the Correct Schwarzschild Metric
2024年
In a recent article, we have corrected the traditional derivation of the Schwarzschild metric, thus obtaining the formulation of the correct Schwarzschild metric, which is different from the traditional Schwarzschild metric. In this article, by starting from this correct Schwarzschild metric, we obtain the formulas of the correct gravitational potential and of the correct gravitational force in the case described by this metric. Moreover, we analyse these correct results and their consequences. Finally, we propose some possible crucial experiments between the commonly accepted theory and the same theory corrected according to this article.
Carlo Maria Pace
关键词:SCHWARZSCHILDMETRIC
对高维Schwarzschild-de Sitter黑洞视界处Fermions量子隧穿辐射率的修正被引量:1
2024年
根据Lorentz-breaking理论对弦量场作用量进行修正并应用变分原理得到了高维Schwarzschild-de Sitter黑洞时空中的费米子动力学方程。通过对此动力学方程的研究得到了高维Schwarzschild-de Sitter黑洞事件视界处和宇宙视界处的量子隧穿率的修正形式,从而研究了此黑洞事件视界处和宇宙视界处的修正形式的Hawking温度和Bekenstein-Hawking熵的新的表达式。在得到研究结果的基础之上,文中最后还对研究方法和结论进行了讨论。
喻子晗李然罗志全杨树政
关键词:FERMIONS黑洞熵
Study of bending angle and shadow in a new Schwarzschild-like black hole affected by plasma and non-plasma mediums被引量:1
2024年
In this study,we analyze the models of the deflection angle of a new Schwarzschild-like black hole(BH)and employ the optical metric of the BH.To achieve this,we use the Gaussian curvature of the optical metric and the Gauss-Bonnet theorem,known as the Gibbons-Werner technique,to determine the deflection angle.Furthermore,we examine the deflection angle in the presence of a plasma medium and the effect of the plasma medium on the deflection angle.The deflection angle of the BH solution in the gauged super-gravity is computed using the Keeton-Petters approach.Utilizing the ray-tracing technique,we investigate the shadow of the corresponding BH and analyze the plots of the deflection angle and shadow to verify the influence of the plasma and algebraic thermodynamic parameters on the deflection angle and shadow.
Riasat AliTiecheng XiaMuhammad AwaisRimsha Babar
关键词:SHADOW
Schwarzschild时空中带记忆项的波动方程耦合方程组解的奇性被引量:1
2024年
本文研究Schwarzschild时空中非线性波动方程耦合方程组的Cauchy问题解的破裂性态.问题的非线性项包含混合型记忆项、组合和幂次型记忆项、组合和导数型记忆项以及组合型记忆项.当非线性项的指数满足一定假设时,利用迭代方法建立解的生命跨度的上界估计.创新之处是在Schwarzschild度量下分析非线性记忆项对解的生命跨度估计的影响.据已有文献所知,定理1.1-1.4中的结果是新的.
明森郝江浩杜嘉仪
关键词:耦合方程组迭代方法
Thermal analysis of the Rindler-Schwarzschild black hole via corrected entropy
2024年
In this study,we investigate the thermodynamic characteristics of the Rindler–Schwarzschild black hole solution.Our analysis encompasses the examination of energy emission,Gibbs free energy,and thermal fluctuations.We calculate various quantities such as the Hawking temperature,geometric mass,and heat capacity to assess the local and global thermodynamic stability.The temperature of the black hole is determined using the first law of thermodynamics,while the energy emission rate is evaluated as well.By computing the Gibbs free energy,we explore the phase transition behavior exhibited by Rindler–Schwarzschild black hole,specifically examining the swallowing tails.Moreover,we derive the corrected entropy to investigate the influence of thermal fluctuations on small and large black holes.Notably,we compare the impact of correction terms on the thermodynamic system by comparing the results obtained for large black holes and small black holes.
Allah DittaXia TiechengRiasat AliAliÖvgün
关键词:THERMODYNAMICS
一种六通道阵列式Schwarzschild极紫外成像系统
本发明公开了一种六通道阵列式Schwarzschild极紫外成像系统,包括转折镜、副镜组、主镜组、像面探测器组,副镜组位于转折镜与主镜组之间,转折镜为平面反射镜,主镜组包括绕主光轴旋转对称且均匀排布的六块主镜,主镜为凸球...
伊圣振司昊轩王占山张哲
一种六通道阵列式Schwarzschild极紫外成像系统
本发明公开了一种六通道阵列式Schwarzschild极紫外成像系统,包括转折镜、副镜组、主镜组、像面探测器组,副镜组位于转折镜与主镜组之间,转折镜为平面反射镜,主镜组包括绕主光轴旋转对称且均匀排布的六块主镜,主镜为凸球...
伊圣振司昊轩王占山张哲
一种多通道阵列式Schwarzschild成像系统的装调方法
本发明属于极紫外光学系统技术领域,涉及一种多通道阵列式Schwarzschild成像系统的装调方法,成像系统包括多个环绕排列的单镜通道,所述单镜通道包括单镜筒以及设于单镜筒内的主镜和副镜,装调方法包括:首先将单镜通道置于...
伊圣振司昊轩王占山张哲蒋励
Time evolutions of scalar field perturbation in Schwarzschild de-Sitter black hole from Einstein-scalar–Gauss–Bonnet theory
2024年
The scalar-free black hole could be unstable against the scalar field perturbation when it is coupled to a Gauss–Bonnet(GB)invariant in a special form.It is known that the tachyonic instability in this scenario is triggered by the sufficiently strong GB coupling.In this paper,we focus on the time domain analysis of massive scalar field perturbation around the Schwarzschild de-Sitter black hole in Einstein-scalar–Gauss–Bonnet gravity.By analyzing the scalar field propagation,we find that the scalar field will finally grow when the GB coupling is large enough.This could lead to the instability of the background black hole.Furthermore,we demonstrate how the mass of the scalar field and the GB coupling strength affect the onset of tachyonic instability.
Cheng XuZhen-Hao YangXiao-Mei KuangRui-Hong Yue
Multiverse/Hyperverse Models: (4 + 1)-Dimensional Landscape (Black Saturns, Bousso-Hawking Nucleation, Gogberashvili Multiverses, Schwarzschild-De Sitter Nurseries) and a (3 + 1)-Dimensional Model for Dark Energy
2024年
We consider the Hyperverse as a collection of multiverses in a (4 + 1)-dimensional spacetime with gravitational constant G. Multiverses in our model are bouquets of thin shells (with synchronized intrinsic times). If gis the gravitational constant of a shell Sand εits thickness, then G~εg. The physical universe is supposed to be one of those thin shells inside the local bouquet called Local Multiverse. Other remarkable objects of the Hyperverse are supposed to be black holes, black lenses, black rings and (generalized) Black Saturns. In addition, Schwarzschild-de Sitter multiversal nurseries can be hidden inside those Black Saturns, leading to their Bousso-Hawking nucleation. It also suggests that black holes in our physical universe might harbor embedded (2 + 1)-dimensional multiverses. This is compatible with outstanding ideas and results of Bekenstein, Hawking-Vaz and Corda about “black holes as atoms” and the condensation of matter on “apparent horizons”. It allows us to formulate conjecture 12.1 about the origin of the Local Multiverse. As an alternative model, we examine spacetime warping of our universe by external universes. It gives data for the accelerated expansion and the cosmological constant Λ, which are in agreement with observation, thus opening a possibility for verification of the multiverse model.
Igor Yu. PotemineWerner Krause
关键词:MULTIVERSE

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