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Mass-Defect Effect in the Hellings-Nordtvedt Field

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Chinese Physics Letters 2002年第6期19卷 755-757页

作者： Huang Xiu-Ju and wang yong-jiu Institute of Physics Hu"nan Normal University

In the Hellings-Nordtvedt theory, we obtain some expressions of the mass-defect effect for a kind of charged celestial body. This is meaningful to calculate the energy radiation in the process of forming this kind of ... 详细信息

关键词： Astrophysics

Einstein-Maxwell Field of the Central Mass

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Chinese Physics Letters 2002年第2期19卷 166-168页

作者： wang yong-jiu and Tang Zhi-Ming Institute of Physics Hu"nan Normal University

We have obtained the exact solution of the Einstein-Maxwell equations outside the central mass with magnetic moment and, at the same time, we have investigated their asymptotic properties

关键词： Magnetic moments

Accelerating Effect in Kerr-Newman-Kasuya Field

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Communications in Theoretical Physics 2002年第10期38卷 509-512页

作者： CAO Deng wang yong-jiu Institute of Physics Hunan Normal University Changsha 410081 China Institute of Physics Hunan Normal University Changsha 410081 China

We have obtained expressions of the accelerating effect in Kerr-Newman Kasuya field. These expressionsinclude four parameters: mass m, angular momentum a, electric charge q, and magnetic charge φ. Furthermore we studyits special case (vi = 0). We get the following conclusion. In the gravitation field of souse mass with electric charge qand magnetic charge b, the acceleration of test particle has not only radial component but also transverse *** θ = 0, the acceleration is minimum, and when θ = π/2, the acceleration is maximum. Furthermore, we discussthe effects of electric charge q and magnetic charge φ respectively.

关键词： acceleration, magnetic charge, Kerr-Newman-Kasuya field

A New Solution of Einstein-Maxwell Equations

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Chinese Physics Letters 1999年第3期16卷 162-163页

作者： wang yong-jiu LU Mao-wang Institute of Physics Hunan Normal UniversityChangsha 410081

A new generation theorem of Einstein-Maxwell field is *** to it,a new solution of Einstein-Maxwell equations can be generated from a static vacuum *** with Schwarzschild solution,a new solution of the Einstein-Maxwell... 详细信息

关键词： solution. theorem. Einstein

Influence of Dark Energy on Gravitational Time Delay

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Communications in Theoretical Physics 2008年第7期50卷 101-104页

作者： CHEN Ju-Hua wang yong-jiu College of Physics and Information Science Hunan Normal University Changsha 410081 China

We investigate the gravitational time delay of light in the Schwarzschild black hole space-time surroundedby *** the analysis and numerical methods,we find that the gravitational time delay of light in theSchwarzschild black hole space-time surrounded by quintessence increases when the normalization factor c increases,andthat the gravitational time delay also decreases when the quintessential state parameter ω_q increases.

关键词： time delay quintessence

Quantum Non-thermal Effect from Black Holes Surrounded by Quintessence

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Communications in Theoretical Physics 2009年第11期52卷 974-976页

作者： GONG Tian-Xi wang yong-jiu Institute of Physics Hunan Normal University Changsha 410081 China School of Physics Hunan University of Science and Technology Xiangtan 411201 China

We present a short and direct derivation of Hawking radiation as a tunneling process across the horizonand compute the tunneling *** the self-gravitation and energy conservation,we use the Keski-Vakkuri,Kraus,and Wilczek(KKW)analysis to compute the temperature and entropy of the black holes surrounded byquintessence and obtain the temperature and entropy are different from the Hawking temperature and the *** result we get can offer a possible mechanism to deal with the information loss paradox becausethe spectrum is not purely thermal.

关键词： hawking radiation quintessence black hole

Entropy of the Nonminimally Coupled Quantum Scalar Fields in a Stationary Axisymmetric Einstein-Maxwell Dilaton- Axion Black Hole

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Chinese Physics Letters 1999年第11期16卷 784-786页

作者： JING Ji-liang wang yong-jiu Department Physics and Institute of Physics Hu’nan Normal UniversityChangsha 410081 Astronomy and Applied Physics Department University of Science and Technology of ChinaHefei 230026

The statistical-mechanical entropy of the stationary axisymmetric Einstein-Maxwell dilaton-axion black hole is investigated by using the “brick wall” model in which the original Dirichlet condition is replaced by a scattering ansatz for the field functions at the event horizon and regularized with the Pauli-Villars scheme. It is also shown, for the Kerr black hole, that the statistical-mechanical entropy obtained from our derivation coincides with the one-loop correction to its thermodynamical entropy obtained by the conical singularity method.

关键词： method Einstein entropy

Interference Phase of Mass Neutrino in Schwarzschild de Sitter Field

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Chinese Physics Letters 2011年第2期28卷 247-249页

作者： CAO Guang-Tao wang yong-jiu Institute of Physics Hunan Normal UniversityChangsha 410081

We calculate the interference phase of the mass neutrinos in high energy limit propagating in radial and nonradial directions along the geodesic by solving Hamilton-Jacobi equation,and discuss the contributions of cos... 详细信息

关键词： Sitter radial momentum

Gravitational Effects Near the Kerr-Newman Black Hole

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Chinese Physics Letters 2001年第8期18卷 1009-1011页

作者： wang yong-jiu TANG Zhi-Ming Institute of Physics Hu’nan Normal UniversityChangsha 410081

We have reached a solution of Dirac equation and the energy spectrum of electron in the gravitational field of the Kerr-Newman black *** results are interesting in astrophysics for observation of the black hole.

关键词： gravitational Newman black