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Search Results: 1 - 10 of 64738 matches for " Jiang Ji-Jian "
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Information entropy for static spherically symmetric black holes

Jiang Ji-Jian,Li Chuan-An,

中国物理 B , 2009,
Abstract: By using the new equation of state density derived from the generalized uncertainty relation, the number of the quantum states near event horizon is obtained, with which then the information entropy of static spherically symmetric black holes has been discussed. It is found that the divergent integral of quantum states near the event horizon can be naturally avoided if using the new equation of state density without introducing the ultraviolet cut-off. The information entropy of black holes can be obtained precisely by the residue theorem, which is shown to be proportional to the horizon area. The information entropy of black holes obtained agrees with the Bechenstein--Hawking entropy when the suitable cutoff factor is adopted.
Quantum area spectrum of Kerr black hole and the smallest mass of micro-black hole
Kerr黑洞的量子面积谱及微黑洞的最小质量

Jiang Ji-Jian,Li Chuan-An,
蒋继建
,李传安

物理学报 , 2005,
Abstract: Kerr black hole has only two parameters of M and J. M and J, as the general coordinates, together with their conjugate variables form a four-di mensional phase space. The quantum area spectrum of Kerr black hole is obtained by performing gauge transformations, from which we can obtain the smallest mas s of Schwarzchild black hole.
New Representation of Rotation Operator and Its Application

WANG Shuai,JIANG Ji-Jian,LI Hong-Qi,

中国物理快报 , 2009,
Abstract: By employing the technique of integration within an ordered product of operators, we derive natural representations of the rotation operator, the two-mode Fourier transform operator and the two-mode parity operator in entangled state representations. As an application, it is proved that the rotation operator constructed by the entangled state representation is a useful tool to solve the exact energy spectra of the two-mode harmonic oscillators with coordinate-momentum interaction.
Thermal radiation and nonthermal radiation of the slowly changing dynamic Kerr--Newman black hole

Meng Qing-Miao,Wang Shuai,Jiang Ji-Jian,Deng De-Li,

中国物理 B , 2008,
Abstract: Using the related formula of dynamic black hole, we have calculated the instantaneous radiation energy density of the slowly changing dynamic Kerr--Newman black hole. It is found that the instantaneous radiation energy density of a black hole is always proportional to the quartic of the temperature of the event horizon in the same direction. By using the Hamilton--Jacobin equation of scalar particles in the curved spacetime, the spontaneous radiation of the slowly changing dynamic Kerr--Newman black hole is studied. The energy condition for the occurrence of the spontaneous radiation is obtained.
The generalized Stefan--Boltzmann law of a rectilinear non-uniformly accelerating Kinnersley black hole

Jiang Ji-Jian,Meng Qing-Miao,Wang Shuai,

中国物理 B , 2009,
Abstract: Using entropy density of Dirac field near the event horizon of a rectilinear non-uniformly accelerating Kinnersley black hole, the law for the thermal radiation of black hole is studied and the instantaneous radiation energy density is obtained. It is found that the instantaneous radiation energy density of a black hole is always proportional to the quartic of the temperature on event horizon in the same direction. That is to say, the thermal radiation of a black hole always satisfies the generalized Stefan--Boltzmann law. In addition, the derived generalized Stefan--Boltzmann coefficient is no longer a constant, but a dynamic coefficient related to the space--time metric near the event horizon and the changing rate of the event horizon in black holes.
New representation of the multimode phase shifting operatorand its application

Wang Shuai,Jiang Ji-Jian,Xu Shi-Min,Li Hong-Qi,

中国物理 B , 2010,
Abstract: Based on the rotation transformation in phase space and the technique of integration within an ordered product of operators, the coherent state representation of the multimode phase shifting operator and one of its new applications in quantum mechanics are given. It is proved that the coherent state is a natural language for describing the phase shifting operator or multimode phase shifting operator. The multimode phase shifting operator is also a useful tool to solve the dynamic problems of the multimode coordinate--momentum coupled harmonic oscillators. The exact energy spectra and eigenstates of such multimode coupled harmonic oscillators can be easily obtained by using the multimode phase shifting operator.
Radiation energy flux of Dirac field of static spherically symmetric black holes

Meng Qing-Miao,Jiang Ji-Jian,Li Zhong-Rang,Wang Shuai,

中国物理 B , 2010,
Abstract: By the statistical entropy of the Dirac field of the static spherically symmetric black hole, the result is obtained that the radiation energy flux of the black hole is proportional to the quartic of the temperature of its event horizon. That is, the thermal radiation of the black hole always satisfies the generalised Stenfan--Boltzmann law. The derived generalised Stenfan--Boltzmann coefficient is no longer a constant. When the cut-off distance and the thin film thickness are both fixed, it is a proportional coefficient related to the space--time metric near the event horizon and the average radial effusion velocity of the radiation particles from the thin film. Finally, the radiation energy fluxes and the radiation powers of the Schwarzschild black hole and the Reissner--Nordstr m black hole are derived, separately.
Thermal particles model and radiation power of static spherically symmetric black holes
静态球对称黑洞的热质点模型及辐射功率

Meng Qing-Miao,Jiang Ji-Jian,Wang Shuai,
孟庆苗
,蒋继建,王帅

物理学报 , 2009,
Abstract: 利用静态球对称黑洞的热质点模型,研究了黑洞的热辐射规律,得到了当η取固有厚度时,对所有Schwarzschild黑洞,其辐射功率都相同,其视界处的辐射能通量与黑洞的质量的平方成反比,而距黑洞遥远的观察者所接收到的辐射能通量与观测者到黑洞的距离的平方成反比; Reissner-Nordstrm黑洞视界处的辐射能通量和辐射功率不仅与黑洞的质量有关,还与黑洞的电荷有关,而距黑洞遥远的观察者所接收到的辐射能通量,当截断的固有厚度η、黑洞的质量m和电荷Q取定后与观测者到黑洞之间的距离的
N-particles intermediate coordinate-momentum representation and its application

Xu Shi-Min,Xu Xing-Lei,Jiang Ji-Jian,Li Hong-Qi,Wang Ji-Suo,

中国物理 B , 2008,
Abstract: This paper constructs the new common eigenvectors of n intermediate coordinate-momentum operators which are complete and orthonormal. The intermediate coordinate-momentum representation of a multi-particles system is proposed and applied to a general n-mode quantum harmonic oscillators system with coordinate-momentum coupling.
Instantaneous radiation energy flux of the scalar field in arbitrarily accelerating black hole with electric charge and magnetic charge
带有电荷、磁荷的一类任意加速黑洞的瞬时辐射能通量

Meng Qing-Miao,Jiang Ji-Jian,Li Chuan-An,
孟庆苗
,蒋继建,李传安

物理学报 , 2010,
Abstract: Using entropy density of scalar field near event horizon in an arbitrarily accelerating black hole with electric charge and magnetic charge,we study the law for the thermal radiation of black hole and the instantaneous radiation energy flux is obtained. It is found that the thermal radiation of a black hole always satisfies the generalized Stefan-Boltzmann's law. The proportional coefficient of generalized Stefan-Boltzmann is no longer a constant,and it becomes a dynamic coefficient that is related to the p...
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