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- What do the scalar fields of string theory represent? 那麽,弦论中的纯量场代表什麽呢?
- Cosmologists already ascribe cosmic inflation, and perhaps the dark energy (distinct from dark matter) that is now causing cosmic acceleration, to scalar fields. 关于宇宙暴胀,以及引发宇宙加速膨胀的暗能量(有别于暗物质),宇宙学者已经将之归因于纯量场。
- The scattering theory of the Dirac equation in one-dimensional time dependent scalar fields has an interesting application to the theory of solitons. 一维含时标量场的狄拉克算子的散射理论在孤子理论中有着有趣的应用。
- That inflation, dark energy and dark matter can all be laid at the doorstep of scalar fields suggests that they might be connected. 从暴胀、暗能量和暗物质都与纯量场往来密切的情况看来,它们彼此之间或许息息相关。
- Each proposed to explain the origin of mass by introducing a new scalar field that interacted with all types of matter. 两篇文章都是利用一种和所有物质都有交互作用的新纯量场来解释质量的来源。
- The simplest physical model for an appropriate dark energy component is a single slowly-rolling scalar field, sometimes referred to as quintessence. 解释黑暗能量最简单的物理模型,是一个单一而缓慢滚动的纯量场,有时称为真空场。
- Abstract We have studied the scalar field as well as the fermonic field perturbations in the background of the massless BTZ (MBTZ) black holes. 我们分别研究了无质量BTZ(MBTZ)黑洞背景下的标量微扰和费米场微扰。
- Statistics such as mean and the root mean square (RMS) of the velocity and the scalar field compares well with the experimental measurements. 模拟得到的速度、组分及其脉动的统计时均结果和实验结果相符较好。
- Then the matching feasibility of 2-D scalar field achieved by the above algorithm is testified with Mean Square Difference (MSD) criterion. 最后采用均方差检验准则验证了其模拟生成二维标量场的匹配适用性。
- Based upon this geometric construction, scalar field, fermionic field, and gauge field are generalized onto such types of noncommutative spaces. 半直积有限群上的质量矩阵理论;点阵上非么正的规范场论,循环点阵规范理论的经典解。
- The distribution of physical quantity of 3-D scalar field of casting surface can be observed visually using the technique to display the 3-D scalar field. 采用该技术来显示铸件各部位在凝固过程中各时刻的三维标量场,可以直观地观察铸件表面三维标量场物理量的分布情况。
- If a scalar field changes slowly, it resembles a constant, both in its fixed magnitude and in its lack of directionality; relativity theory predicts it will produce a gravitational repulsion. 如果纯量场变化缓慢,它就会有固定的大小,而且没有方向性,就像一个常数一样;相对论预测,这种情况会产生重力排斥效应。
- To the lowest-order approximation in h, an important relation between the vacuum expectation value of color gauge fields and scalar fields is also derived by solving the Euler equation for the gauge fields. 其次,在树图近似下,推导出了关于色规范场的真空期待值与标量场的真空期待值之间的一个重要关系式,并在此关系式的基础上,通过求解标量场的解而间接地给出了色规范场的解。
- We have extended the Rindler effect to the Dirac spinor field. By means of the Bogoliubov transformation on the Dirac spinor field in Rindler spacetime. We obtain a similar result to the Klein-Gordon scalar field. 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。
- In the first chapters, the concepts of black hole and the event horizon, black hole radiation ,the thermal properties of black hole, and scalar field radiation are introduced briefly. 在论文的第一章,简单地介绍了黑洞的形成、视界的概念、黑洞的热性质以及黑洞辐射和标量场辐射等基础知识。
- In this paper, the scalar field perturbations in the background of the massless BTZ black holes was discussed.We found that the massless BTZ hole contains only normal modes in the perturbations. 摘要讨论了在无质量BTZ黑洞背景中的标量场扰动,发现在此情况下,只存在正则模。
- The solutions of scalar field equations in the region between the black hole's event horizon and the cosmological horizon in static and spherically symmetrical space-time are given in this paper. 摘要采用多项式函数代替乌龟坐标的方法,给出静态球对称时空中黑洞事件视界和宇宙视界区域内标量场方程的解,并对事件视界附近势垒的性质进行了讨论。
- In order not to be late, she cut across the fields. 为了不迟到,她抄近路穿过田野。
- The nucleon field and delta field interact through a scalar field and a vector field ,while the pion and rho meson mean field vanish in symmetric nuclear matter in the mean-field theory. 我们采取核子场 和 场 通过标量场 和矢量场 相互作用,而在平均场理论中对称核物质的 介子和 介子场消失。
- The field artillery pounded away at the for tress. 野战炮兵连续炮击那座要塞。