共查询到15条相似文献,搜索用时 31 毫秒
1.
在直线加速Kinnersley时空中,将相互耦合的Dirac方程化为二阶方程,采用新的乌龟坐标变换,在视界面附近消除二阶方程中的耦合化成了标准波动方程,得到辐射温度函数和Hawking热辐射谱. 相似文献
2.
任意加速带电动态黑洞中Dirac粒子的Hawking辐射 总被引:1,自引:0,他引:1
在任意加速带电动态时空中,选取零标架、计算出旋系数,把四个耦合的Dirac方程中化成两个耦合的方程,采用Tortoise坐标变换将其两个耦合的方程变换成Tortoise坐标下的形式,在黑洞视界面附近化成了典型的波动方程,得到在视界面附近Dirac粒子的Hawking辐射温度,成功地导出了Hawking热谱公式.关键词:Dirac方程Hawking辐射黑洞Tortoise坐标变换 相似文献
3.
电磁直线加速动态黑洞时空中Dirac粒子的Hawking辐射 总被引:14,自引:3,他引:14
研究了作直线加速运动的电磁黑洞视界面上Dirac粒子的Hawking 辐射.首先,构造对称化零 标架,计算旋系数,导出Dirac方程,并对其进行化简.然后,通过引入广义乌龟坐标,在视 界面上将Dirac方程退耦.利用Damour-Ruffini方法,求出了温度以及热谱公式,并对所得结 果进行了讨论.关键词:加速动态黑洞Dirac粒子Dirac方程Hawking辐射 相似文献
4.
采用两种新的乌龟坐标变换,用改进的Damour-Ruffini方法研究了动态Kinnersley黑洞的Hawking辐射.在新乌龟坐标变换下,将Klein-Gordon方程在视界附近变换成平直时空的标准波动方程形式,得到了黑洞的表面引力及Hawking温度,该温度在黑洞表面不同点有不同的值.值得注意的是,旧的乌龟坐标变换存在量纲错误,新乌龟坐标变换没有量纲问题,选不同的旧乌龟坐标变换计算同一黑洞所得结果不同,但是采用不同的新乌龟坐标变换所得结果仍然不同.关键词:黑洞乌龟坐标变换Hawking辐射Klein-Gorden方程 相似文献
5.
直线加速动态黑洞Dirac场的熵 总被引:10,自引:6,他引:10
采用薄层模型brickwall方法,计算出了直线加速动态黑洞视界面上Dirac场的熵以及Rindler视界面上Dirac场的熵密度,通过适当选择时间依赖的截断因子ε和薄层厚度δ,仍可得出熵与面积成正比的结论关键词:熵加速动态黑洞薄层模型Dirac场Dirac方程 相似文献
6.
7.
运用费米子隧穿的理论,对Vaidya-Bonner黑洞的费米子Hawking辐射进行研究.使用随动坐标变换,并假设γμ矩阵的一个合理形式,从而得到了Vaidya-Bonner黑洞的自旋为1/2的粒子的隧穿辐射行为.关键词:Vaidya-Bonner黑洞Dirac方程Hawking辐射费米子隧穿 相似文献
8.
本文用一种新的乌龟坐标变换和改进的Damour-Ruffini方法研究了动态Kerr黑洞的Hawking辐射,得到了随时间和纬度角而变化的局域温度和具有准黑体谱形式的Hawking辐射谱.其结果与采用通常的乌龟坐标变换所得结果有所不同,而通常的乌龟坐标变换在量纲上存在一定的问题,本文的结果也许更为合理.关键词:Hawking辐射动态Kerr黑洞改进的Damour-Ruffini方法新乌龟坐标变换 相似文献
9.
一般球对称动态时空中荷电Dirac粒子的Hawking辐射 总被引:3,自引:0,他引:3
研究了一般球对称动态黑洞视界附近荷电Dirac粒子的Hawking辐射,得到了确定视界面位置的方程和辐射温度,并成功地导出Hawking热谱。关键词: 相似文献
10.
一般球对称带电蒸发黑洞Dirac场的熵 总被引:7,自引:1,他引:7
采用薄层模型brick-wall方法,计算了一般球对称带电蒸发黑洞Dirac场的熵,通过适当选择时间依赖的截断因子,仍可得出黑洞熵与视界面积成正比的结论.关键词:熵蒸发黑洞薄层模型Dirac场Dirac方程 相似文献
11.
The Hawking effect of Dirac particles in a variable-mass Kerr space-time is investigated by using a method called as the generalized tortoise coordinate transformation. The location and the temperature of the event horizon of the non-stationary Kerr black hole are derived. It is shown that the temperature and the shape of the event horizon depend not only on the time but also on the angle. However, the Fermi–Dirac spectrum displays a residual term which is absent from that of Bose–Einstein distribution. 相似文献
12.
The Hawking radiation of Dirac particles in an arbitrarily rectilinearly accelerating Kinnersley black hole with electromagnetic charge and cosmological constant is investigated by using the generalized tortoise coordinate transformation. Both the location and the temperature of the event horizon depend on the time and the polar angle. The Hawking thermal radiation spectrum of Dirac particles is also derived. 相似文献
13.
Hawking Radiation of Dirac Particles in an Arbitrarily Accelerating Kinnersley Black Hole 总被引:1,自引:0,他引:1
Quantum thermal effect of Dirac particles in an arbitrarily accelerating Kinnersley black hole is investigated by using the method of generalized tortoise coordinate transformation. Both the location and the temperature of the event horizon depend on the advanced time and the angles. The Hawking thermal radiation spectrum of Dirac particles contains a new term which represents the interaction between particles with spin and black holes with acceleration. This spin-acceleration coupling effect is absent from the thermal radiation spectrum of scalar particles. 相似文献
14.
The Hawking radiation of Dirac particles on the event horizon of a nonuniformly rectilinearly accelerating black hole is studied in this paper. First, we construct the symmetrized null tetrad from which the spin coefficients and Dirac equation are derived. Next, by proposing generalized tortoise coordinate transformation, the decoupling problem of the Dirac equation with nonzero rest mass is solved. Finally, by analytic continuation, the Hawking thermal spectrum formula of Dirac particle for nonuniformly rectilinearly accelerating black hole is obtained. 相似文献
15.
Using a new tortoise coordinate transformation, this paper investigates the Hawking effect from an arbitrarily accelerating charged black hole by the improved Damour-Ruffini method. After the tortoise coordinate transformation, the Klein-Gordon equation can be written as the standard form at the event horizon. Then extending the outgoing wave from outside to inside of the horizon analytically, the surface gravity and Hawking temperature can be obtained automatically. It is found that the Hawking temperatures of different points on the surface are different. The quantum nonthermal radiation characteristics of a black hole near the event horizon is also discussed by studying the Hamilton-Jacobi equation in curved spacetime and the maximum overlap of the positive and negative energy levels near the event horizon is given. There is a dimensional problem in the standard tortoise coordinate and the present results may be more reasonable. 相似文献