共查询到20条相似文献,搜索用时 15 毫秒
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本文对统计中的杨-Baxter方程的Zn对称解进行了仔细的分析,自然地得到了相应的量子代数的结构常数,并对这个解给出了一个直接的证明。
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《Journal of Nonlinear Mathematical Physics》2013,20(4):580-594
The Lorentz-group of transformations usually consists of linear transformations of the coordinates, keeping as invariant the norm of the four-vector in (Minkowski) space-time. Besides those linear transformations, one may construct different forms of nonlinear transformations of the coordinates keeping unchanged that respective invariant. In this paper we explore nonlinear transformations of second-order which have a natural interpretation within the framework of Yamaleev's concept of the counterpart of rapidity (co-rapidity). The purpose of developed concept is to show that the formulae for energy and momentum of the relativistic particle become regular near the zero-mass and speed of light states. Furthermore, in a covariant formulation, the co-rapidity is presented as a four-vector which admits an extension of the Lorentz-group of transformations. In this paper we additionally show, that in the same way as the rapidity is related to the electromagnetic field, the co-rapidity is related to the field of strengths, which are given by a four-vector. The corresponding equations of such a field are also constructed. 相似文献
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FAN Hong-yi 《理论物理通讯》1986,6(3):269-276
In terms of the technique of perfoming integra-tion within ordered product we show the integra-tion appearing in the rotation operator ∫d3r→|Rr→ >< r→|≡D(R) can be explicitly carried out and leads to a kind of new operator identities,their coherent state matrix elements are then easy to be computed. 相似文献
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通常情况下,由于计算机在字符显示状态下在内存中存在一个显示代码缓存区,此缓存区存放屏幕上显示内容的ASCⅡ码;因此在LED显示应用上,尤其在需要将控制机显示内容在另一区域的LED屏幕重现时所需要的数据传输方面上,上述代码缓存区具有重要的作用.但是当我们使用象pc-1500这样的机器作LED显示系统的控制机时,由于它无上述的系统有规律的顺序显示代码缓存区,同时鉴于LED与主控机点阵的不同及需传送的数据量等问题,我们在传输屏幕内容上存在一定的困难.本文提出并采用一种布尔变换及解变换方法来解决这个问题. 相似文献
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《Journal of Nonlinear Mathematical Physics》2013,20(1):77-92
Lie group analysis is applied to a mathematical model for thin liquid films, namely a nonlinear fourth order partial differential equation in two independent variables. A three-dimensional Lie symmetry algebra is found and reductions to fourth order ordinary differential equations are obtained by using its one-dimensional subalgebras. Two of these ordinary differential equations are studied by the reduction method and by the Jacobi last multiplier method, and found to be linearizable. Furthermore, the G-equation and η-equation, namely two of the heir-equations obtained by iterating the nonclassical symmetries method, are constructed and reductions to different ordinary differential equations are acquired by using two-dimensional and three-dimensional subalgebras, respectively. 相似文献
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研究一类非线性微分变换算子及其离散格式,它们在信号和图象处理中可视为一种非线性滤波器,并具有线性滤波器所没有的一些特点. 相似文献
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反光发光复合标牌,不仅能将光源方向的入射光线回归反射向光源方向,具有反光特性.还能将光源中大量的红外光转换成可见光,具有发光特性.从而使标牌的亮度和可视距离得到提高. 相似文献
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介绍几种国外典型的红外光谱辐射计和自行研制的便携式红外光谱辐射计的光学结构及主要性能,并提出红外光谱辐射计的一些应重点解决的技术问题。 相似文献
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NEW B$\ddot{A}$CKLUND TRANSFORMATION AND EXACT SOLUTIONS FOR VARIABLE COEFFICIENT KdV EQUATION 下载免费PDF全文
In this paper, with the aid of Lax pairs, a new B?cklund transformation for the variable coefficient KdV equation is found, Based on the B?cklund transformation, only if integration is needed, a series of exact solutions can be obtained. This method is important for finding more new and physical-signficant solutions. 相似文献
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一种双光路单探头吸收光谱同时测量方法 总被引:5,自引:0,他引:5
本文介绍一种带源补偿的吸收光谱测量方法,利用锁相放大器选频放大和相干接收的特点,和双光路分光,由单探头同时接收源光强和透射光强。 相似文献
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原子运动和场模结构对原子动力学特性的影响 总被引:3,自引:3,他引:3
研究了双光子Jaynes-Cummings(J-C)模型中原子的动力学特性,讨论了在不同初态下,原子运动和场模结构对体系中原子反转的演化特性及原子偶极矩k阶压缩的影响.研究结果表明,原子的动力学特性不仅决定于原子和场的初态参量,而且通过时间因子gΘ(t)=2-1gt-(4p)-1sin(2pgt)决定于原子的运动速度与场模结构参量. 相似文献
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我们用C语言开发出用于显示分子图形及振动的Molfig软件,并为程序配备了多种功能和一个友好的人机交互界面以方便使用。经试用表明,该软件可为我们加强理解分子的振动光谱与结构之间的关系提供了有效的帮助。 相似文献
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求解对流扩散方程的一种有限分析方法 总被引:2,自引:0,他引:2
本文提出了一种求解线性与拟线性对流扩散方程的有限分析格式,证明了这种格式的解的存在唯一性及绝对稳定性与广义弱稳定性等,大量算例表明它具有较高的精度与很好的稳定性。 相似文献
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本文介绍一种利用延迟采样实现部分谱的Tailored检测的方法。文章对该方法作了理论上的分析并给出了用于强溶剂峰抑制时的实验结果,获得良好的效果。 相似文献