共查询到19条相似文献,搜索用时 109 毫秒
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将经典质量的变化和质量随速度变化这一相对论效应同时考虑,建立定轴转动变质量系统的相对论性基本动力学方程,达朗贝尔(d'Alembert)原理及Lagrange方程.
关键词: 相似文献
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关于变质量系统的动能定理 总被引:1,自引:0,他引:1
同讨论变质量物体运动方程一样,用动能定理处理变质量问题时,通常也有两种方法:一种是以变质量质点(主体)为研究对象,由此可导出变质量质点的动能定理[1];另一种是以变质量系统(二质点系)为研究对象,由此可导出变质量系统的动能定理.应该说,两种方法都是可行的. 相似文献
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本文由方程和D Alembert原理导出了变质量耗散系统的Lagrange方程,给出了耗散函数的一般式,并讨论其应用. 相似文献
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在群的无限小变化下, 研究奇异变质量单面非完整系统Nielsen方程的Noether-Lie对称性. 建立系统运动微分方程的Nielsen形式, 给出系统Nielsen方程的Noether-Lie对称性的定义、判据和命题, 得到系统Nielsen 方程的Noether-Lie对称性所导致的Noether守恒量和广义Hojman守恒量. 最后给出说明性算例说明结果的应用.
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奇异变质量系统
单面非完整约束
Nielsen方程
Noether-Lie对称性 相似文献
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Bound States of the Klein-Gordon Equation With Vector and Scalar Wood-Saxon Potentials 总被引:5,自引:0,他引:5 下载免费PDF全文
In this paper,simultaneously considering the
variation of classical mass and the relativistic effect of mass variation with velocity,a
relativistic four-covariant equation of variable mass body is built.And the physical
meaning of 相似文献
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The primary purpose of this work is to reproduce the scenario composed of a charge-dyon system utilizing position-dependent effective mass (PDM) background in the non-relativistic and in the relativistic regimes. In the non-relativistic case we substitute the exact charge-dyon eigenfunction into PDM Schr?dinger equation, in the Zhu-Kroemer parametrization, and then solve it for the mass distribution considering $M=M(r)$. Analogously, in the relativistic case we study the Klein-Gordon equation for a position-dependent mass, and in this case, we are able to analytically solve the equation for $M=M(r,\theta)$. 相似文献
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Zhenglu Jiang 《Journal of statistical physics》2008,130(3):535-544
By combining the DiPerna and Lions techniques for the nonrelativistic Boltzmann equation and the Dudyński and Ekiel-Jeżewska
device of the causality of the relativistic Boltzmann equation, it is shown that there exists a global mild solution to the
Cauchy problem for the relativistic Boltzmann equation with the assumptions of the relativistic scattering cross section including
some relativistic hard interactions and the initial data satisfying finite mass, energy and entropy. This is in fact an extension
of the result of Dudyński and Ekiel-Jeżewska to the case of the relativistic Boltzmann equation with hard interactions.
This work was supported by NSFC 10271121 and the Scientific Research Foundation for the Returned Overseas Chinese Scholars,
the Ministry of Education of China, and sponsored by joint grants of NSFC 10511120278/10611120371 and RFBR 04-02-39026. 相似文献
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Maurizio De Sanctis 《Central European Journal of Physics》2014,12(4):221-232
We study a fully relativistic, two-body, quadratic wave equation for equal mass interacting particles. With this equation the difficulties related to the use of the square roots in the kinetic energy operators are avoided. An energy-dependent effective interaction, also containing quadratic potential operators, is introduced. For pedagogical reasons, it is previously shown that a similar procedure can be also applied to the well-known case of a one-particle Dirac equation. The relationships of our model with other relativistic approaches are briefly discussed. We show that it is possible to write our equation in a covariant form in any reference frame. A generalization is performed to the case of two particles with different mass. We consider some cases of potentials for which analytic solutions can be obtained. We also study a general numerical procedure for solving our equation taking into account the energy-dependent character of the effective interaction. Hadronic physics represents the most relevant field of application of the present model. For this reason we perform, as an example, specific calculations to study the charmonium spectrum. The results show that the adopted equation is able to reproduce with good accuracy the experimental data. 相似文献
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We present a relativistic three-body equation to investigate the properties of nucleons in hot and dense nuclear/quark matter. Within the light-front approach we utilize a zero-range interaction to study the three-body dynamics. The relativistic in-medium equation is derived within a systematic Dyson equation approach that includes the dominant medium effects due to Pauli blocking and self-energy corrections. We present the in-medium nucleon mass and calculate the dissociation of the three-body system. 相似文献
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介子结合态本征方程中δ相互作用可用T矩阵进行非微扰重整化,深入理解重整化的一些基本问题:物理结果与重正化点的选取无关,T矩阵非微扰重整化的物理实质. Nonperturbative T-matrix renormalization of the relativistic eigen equation for meson mass spectra is described and the expressions for eigen mass spectra and eigen wave functions are given. 相似文献
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The time derivative of the position of a relativistic wave packet is evaluated. It is found that it is equal to the mean value of the momentum of the wave packet divided by the mass of the particle. The equation derived represents a relativistic version of the second Ehrenfest theorem. 相似文献