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 共查询到18条相似文献,搜索用时 218 毫秒
1.
在动态带电黑洞周围对Dirac旋量粒子的动力学行为进行了研究,得到Dirac粒子四分量波函数的显式表示.把对动态带电黑洞量子热效应的研究推广到用(t,r)坐标描述的时空.进一步发展了研究动态黑洞的乌龟坐标方法.给出了动态带电黑洞的视界位置和温度.  相似文献   

2.
孟庆苗 《德州学院学报》2004,20(4):17-18,39
利用弯曲时空中标量粒子运动的Hamilton-Jacobin方程,研究一般球对称蒸发黑洞周围时空中标量粒子的能量.得到了粒子的能量不仅与粒子的质量有关,还与黑洞的时空结构及视界的变化有关.给出了粒子在弯曲时空中的能量分布.  相似文献   

3.
改进了研究球对称黑洞中旋量粒子 Hawking 辐射的方法。利用新方法直接给出旋量粒子的径向方程,给出视界面公式、视界温度函数公式和 Hawking 辐射规律。  相似文献   

4.
将Rindler效应在Dirac旋量场中做了推广,通过Rindler时空中Dirac旋量场的Bogliubov变换,得到了和Klein-Gordon标量场中相类似的结果.  相似文献   

5.
利用弯曲时空中标量粒子运动的Hamilton -Jacobin方程 ,研究带有电荷和磁荷的球对称动态黑洞周围时空中标量粒子的能量分布 ,它不仅依赖于黑洞的质量、电荷和磁荷 ,还与黑洞视界的变化有关 ,与视界附近的四维电磁势有关  相似文献   

6.
从求解Vaidya时空中Dirac粒子所遵从的动力学方程出发,计算出该时空中Dirac场的熵,得到了熵与视界的面积成正比的结论。  相似文献   

7.
将Rindler效应在Dirac旋量场中做了推广,通过Rindler时空中Dirac旋量场的Bogliubov变换。得到了和Kleln-Gordon标量场中相类似的结果。  相似文献   

8.
黑洞熵     
该文避开求解黑洞背景下波动方程的困难,应用量子统计方法,直接求解黑洞背景下Bose场和Fermi场的配分函数.然后利用膜模型,计算黑洞背景下热辐射谱的熵,由此熵寻求被黑洞视界反射回热谱的熵.从而对黑洞熵给出了一种新的解释,即黑洞熵是由辐射谱被视界面反射回的那一部提供的,与视界外的辐射场无关.当取适当的贯穿系数时,得到黑洞熵与视界面积成正比的结论.在所得结论中不存在对数发散项与舍去项,也不存在黑洞视界外标量场或Dirac场为什么是黑洞熵疑难.并且给出粒子的自旋简并度对黑洞熵的影响.为研究各种复杂黑洞熵提供了一条简捷的新途径.  相似文献   

9.
夸克、轻子形变与SU(3)对称   总被引:1,自引:0,他引:1  
假定夸克、轻子因具有结构而发生形变,则夸克、轻子的形变空间可以解释为旋量空间,且旋量量子数、电荷数及超荷都可以用形变振荡量子数表示.并推广到三代粒子的情形,研究了它们的SU(3)亚群对称.  相似文献   

10.
利用弯曲时空中标量粒子运动的Hamilton-Jacobin方程,研究Vaidya-deSitter时空背景下标量粒子的能量。得到了粒子的能量不仅与粒子的质量有关,还与黑洞的时空结构及视界的变化有关.  相似文献   

11.
在Clifford代数中,双曲虚单位j所对应的双曲复空间与Minkowski空间相吻合,是一种带有连续奇点的非Euclidean空间。在双曲复空间引入Dirac波动方程,比传统的Dirac方程数多出一倍,形成了入重Dirac粒子。其特点是,正、反粒子相互厄米共轭,表现为特殊幺正群SU(n)的形式。利用双曲复时空间的对称性,可以解释时间反演、能量反演与复共轭变换的对应关系,能够找出正、反粒子的时空对应点。  相似文献   

12.
Masud Mansuripur 《Resonance》2013,18(2):130-155
A close examination of the Maxwell-Lorentz theory of electrodynamics reveals that polarization and magnetization of material media need not be treated as local averages over small volumes — volumes that nevertheless contain a large number of electric and/or magnetic dipoles. Indeed, Maxwell’s macroscopic equations are exact and self-consistent mathematical relations between electromagnetic fields and their sources, which consist of free charge, free current, polarization, and magnetization. When necessary, the discrete nature of the constituents of matter and the granularity of material media can be handled with the aid of special functions, such as Dirac’s delta-function. The energy of the electromagnetic field and the exchange of this energy with material media are treated with a single postulate that establishes the Poynting vector S = E × H as the rate of flow of electromagnetic energy under all circumstances. Similarly, the linear and angular momentum densities of the fields are simple functions of the Poynting vector that can be unambiguously evaluated at all points in space and time, irrespective of the type of material media, if any, that might reside at various locations. Finally, we examine the Einstein-Laub force- and torque-density equations, and point out the consistency of these equations with the preceding postulates, with the conservation laws, and with the special theory of relativity. The set of postulates thus obtained constitutes a foundation for the classical theory of electrodynamics.  相似文献   

13.
给出了量子力学的八元数形式的运动方程,并由此导出了薛定谔方程.讨论了八元数方程的协史性,八元数方程与Dirac方程的关系等问题.  相似文献   

14.
Solitons emerge as non-perturbative solutions of non-linear wave equations in classical and quantum theories. These are non-dispersive and localised packets of energy — remarkable properties for solutions of non-linear differential equations. In the presence of such objects, the solutions of Dirac equation lead to the curious phenomenon of ‘fractional fermion number’. Under normal conditions the fermion number takes strictly integral values. In this article, we describe this accidental discovery and its manifestation in polyacetylene chains, which has led to the development of organic conductors. (left) Kumar Rao is a Postdoctoral Fellow at PRL, Ahmedabad. He is interested in particle physics phenomenology as probed in particle colliders and formal aspects of quantum field theory. (right) Narendra Sahu is currently a postdoctoral fellow at Lancaster University, UK. His main research area includes Cosmology and Astroparticle physics. Currently he is working on dark matter and matter anti-matter asymmetry of the universe. (center) P K Panigrahi’s research interests are in the area of quantum computation, solitons in Bose Einstein condensates & nonlinear optical media. He is also deeply interested in science education and derives pleasure from long weekend walks.  相似文献   

15.
利用B样条技术计算强磁场中InAs量子环的能级和量子尺寸效应.计算结果表明:磁场对量子环的能级曲线Enr,mt--r0影响剧烈;当量子环较大时,随着磁场强度B的增大,能级曲线快速上升,对应不同角动量的简并消失.能量曲线的极小值位置r∞随着B的增加而减小,随着mt增大而增大.能级随着谐振子势wh的增大而增大.不同能级曲线Enr,mt——wh出现交叉现象.当量子环较大时,E即%——B曲线.随磁场B增加线性上升,不同能级出现交叉现象.  相似文献   

16.
In this paper, a three-parameter family of self-similar and weak solutions are constructed rigorously in two space dimensions for all positive time to the Euler equations with axisymmetric and radial negative initial velocity for the Chaplygin gas. Under the axisymmetry and self-similar assumptions, the equations are reduced to a system of three ordinary differential equations, from which we obtain structures of solutions besides their existence. The solutions exhibit some phenomena, such as formation and evolution of black hole, expansion and explosive expansion, in the evolution of universe.  相似文献   

17.
利用膜模型技术研究双视界面黑洞Dirac场的Planck绝对熵及内外视界的平权性.结果表明:非动态球对称黑洞Dirac炀的Planck绝对熵与黑洞的质量、外视界温度及外视界面积的乘积成正比.  相似文献   

18.
基于高阶微商规范系统Green函数的生成泛函,导出了该系统在量子水平下的变换性质方程,给出了系统存在量子守恒律的条件和守恒量的表达式.用于高阶微商非Abel Chem—Simons理论,求出了系统的量子BRST守恒荷和其他守恒荷;讨论共形变换下量子水平的变换性质,导出了系统的量子守恒角动量,指出该系统在量子理论中仍可保持分数自旋性质,但经典对称性和守恒律的联系在量子水平不一定再保持.  相似文献   

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