We present a short and direct derivation of Hawking radiation as a tunneling process across the horizonand compute the tunneling probability.Considering the self-gravitation and energy conservation,we use the Keski-Va...We present a short and direct derivation of Hawking radiation as a tunneling process across the horizonand compute the tunneling probability.Considering 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 Bekenstein-Hawkingentropy.The result we get can offer a possible mechanism to deal with the information loss paradox becausethe spectrum is not purely thermal.展开更多
We investigate the evolution of the viscous dark energy(DE)interacting with the dark matter(DM)in the Einstein cosmology model.By using the linearizing theory of the dynamical system,we find that,in our model,there ex...We investigate the evolution of the viscous dark energy(DE)interacting with the dark matter(DM)in the Einstein cosmology model.By using the linearizing theory of the dynamical system,we find that,in our model,there exists a stable late time scaling solution which corresponds to the accelerating universe.We also find the unstable solution under some appropriate parameters.In order to alleviate the coincidence problem,some authors considered the effect of quantum correction due to the conform anomaly and the interacting dark energy with the dark matter.However,if we take into account the bulk viscosity of the cosmic fluid,the coincidence problem will be softened just like the interacting dark energy cosmology model.That is to say,both the non-perfect fluid model and the interacting the dark energy cosmic model can alleviate or soften the singularity of the universe.展开更多
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...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 cosmological constant X and angular momentum L to the phase shift in Schwarzschild de Sitter spacetime.展开更多
We have reached a solution of Dirac equation and the energy spectrum of electron in the gravitational field of the Kerr-Newman black hole.The results are interesting in astrophysics for observation of the black hole.
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 ...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.展开更多
A new generation theorem of Einstein-Maxwell field is attained.According to it,a new solution of Einstein-Maxwell equations can be generated from a static vacuum solution.Starting with Schwarzschild solution,a new sol...A new generation theorem of Einstein-Maxwell field is attained.According to it,a new solution of Einstein-Maxwell equations can be generated from a static vacuum solution.Starting with Schwarzschild solution,a new solution of the Einstein-Maxwell equation is obtained by means of this theorem.展开更多
基金Supported by the National Basic Research Programme of China under Grant No.2010CB832800the Natural Science Foundation of China under Grant No.10873004the Hunan Provincial Education Department Scientific Research Fund under Grant No.09C392
文摘We present a short and direct derivation of Hawking radiation as a tunneling process across the horizonand compute the tunneling probability.Considering 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 Bekenstein-Hawkingentropy.The result we get can offer a possible mechanism to deal with the information loss paradox becausethe spectrum is not purely thermal.
基金Supported by the National Natural Science Foundation of China under Grant No 10873004the Program for Excellent Talents in Hunan Normal University,the National Basic Research Program of China under Grant No 2010CB832803+1 种基金the Key Project of the National Natural Science Foundation of China under Grant No 10935013Construct Program of the National Key Discipline and the Program for Changjiang Scholars and Innovative Research Team in University under No IRT0964.
文摘We investigate the evolution of the viscous dark energy(DE)interacting with the dark matter(DM)in the Einstein cosmology model.By using the linearizing theory of the dynamical system,we find that,in our model,there exists a stable late time scaling solution which corresponds to the accelerating universe.We also find the unstable solution under some appropriate parameters.In order to alleviate the coincidence problem,some authors considered the effect of quantum correction due to the conform anomaly and the interacting dark energy with the dark matter.However,if we take into account the bulk viscosity of the cosmic fluid,the coincidence problem will be softened just like the interacting dark energy cosmology model.That is to say,both the non-perfect fluid model and the interacting the dark energy cosmic model can alleviate or soften the singularity of the universe.
基金Supported by the National Basic Research Program of China under Grant No 2010CB832800the National Natural Science Foundation of China under Grant No 10873004the Scientific Research Fund of Hunan Provincial Education Department under Grant No 08B051.
文摘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 cosmological constant X and angular momentum L to the phase shift in Schwarzschild de Sitter spacetime.
文摘We have reached a solution of Dirac equation and the energy spectrum of electron in the gravitational field of the Kerr-Newman black hole.The results are interesting in astrophysics for observation of the black hole.
基金the National Natural Science Foundation of China under Grant No.19575018the Natural Science Foundation of Hu'nan Province.
文摘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.
文摘A new generation theorem of Einstein-Maxwell field is attained.According to it,a new solution of Einstein-Maxwell equations can be generated from a static vacuum solution.Starting with Schwarzschild solution,a new solution of the Einstein-Maxwell equation is obtained by means of this theorem.
