共查询到19条相似文献,搜索用时 93 毫秒
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利用波函数及其导数的连续性条件,讨论Kronig—Penney模型中的电子波函数,得到Kronig—Penney模型相邻周期中波函数的转移矩阵,通过转移矩阵分析得到Kronig—Penney模型中的电子波函数,并进行了讨论. 相似文献
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本文应用拉普拉斯变换得到了三维各向同性谐振子波函数边界的精确解,同时,利用同种方法还得到了利用产生算符和湮灭算符表达的该波函数的递推关系. 相似文献
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用群论方法给出了IBM4中强耦合SU(3)极限的内禀态波函数,然后用投影方法由内禀态波函数得到了基带波函数. 相似文献
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在有效质量近似和变分原理的基础上,选取含两个变分参数的波函数,研究了纤锌矿结构的GaN/AlxGa1-xN单量子点中类氢施主杂质体系的结合能随量子点(QD)尺寸以及杂质在量子点中位置的变化,并与以前使用不同尝试波函数的计算结果进行了比较。结果表明:由我们选取的两变分参数波函数得到的结果与前人选取的两变分参数波函数得到的结果相比有所改进,而与选取一个变分参数波函数得到的结果一致。同时我们还计算了体系的维里定理值随量子点半径的变化情况,所得结果与前人工作结果一致,说明本文选取的两变分参数波函数能很好地描述柱形量子点中施主杂质态的运动。 相似文献
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有源RLC电路量子化的双波描述 总被引:1,自引:0,他引:1
采用正则变换量子化以及规范变换方案,得到有源RLC电路量子化哈密顿算符及其波函数.引入双波函数描述其量子状态,得到了电荷、电流等物理量的时间演化方程.对有源RLC电路给出更完整的描述. 相似文献
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稀磁半导体Zn1-xMnxTe吸收光谱压力红移的理论研究 总被引:1,自引:1,他引:0
以自由Mn2+离子的径向波函数为基础,通过引入电子云延伸效应系数κ来修正这一径向波函数,得到了稀磁半导体Zn1-xMnxTe晶体中Mn2+离子的径向波函数.以此波函数为基础,研究了Zn1-xMnxTe晶体吸收光谱的高压谱移特性,并且得到了吸收谱中四条谱线随压力的红移规律. 相似文献
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在波叠加法中,结构外部声场是在离散边界上对Green函数进行积分并叠加得到,但数值积分的计算效率较低。而等效源法虽然提高了计算效率,但其面源简化为点源的过程中存在较大的积分近似误差。针对上述两种方法的缺陷,构造了一种波函数以替代离散单元关于Green函数积分的声场。首先,利用球坐标系下Helmholtz方程的解,推导了替代矩形单元积分的一般形式波函数及效率更高的内推波函数。其次,当离散单元为正方形时,将其近似成圆形域,进一步简化了内推波函数的表达式。最后,将所构造的波函数应用于声场计算。数值结果表明,在计算单个矩形单元外部辐射声场时,构造的波函数不仅保证了计算精度,而且相比于直接积分大幅度提高了计算效率。其中,矩形域一般形式和内推形式的波函数计算效率是直接积分的5~6倍,圆形域内推波函数计算效率达到了直接积分的12~13倍。在简支板声源和立方箱体辐射声源数值算例中,圆形域内推波函数在整个计算频段的声场计算精度均高于等效源法。 相似文献
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Applications of Jacobi Elliptic Function Expansion Method for Nonlinear Differential-Difference Equations 总被引:1,自引:0,他引:1
The Jacobi elliptic function expansion method is extended to derive the
explicit periodic wave solutions for nonlinear differential-difference equations. Three well-known examples are
chosen to illustrate the application of the Jacobi elliptic function expansion method. As a result, three types of periodic wave solutions including Jacobi elliptic sine function, Jacobi
elliptic cosine function and the third elliptic function solutions
are obtained. It is shown that the shock wave solutions and
solitary wave solutions can be obtained at their limit condition. 相似文献
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Exact representations for the wave function and for the Green function of the Hamiltonian with the sharply screened Coulomb potential are given. The representations are obtained by summing up the partial wave series. The final form of the wave function and the Green function in the region of the coordinate space where the potential is not zero are given in terms of the Coulomb wave function and the Coulomb Green function, respectively. The exact representation has been obtained for the transition operator in the configuration space. 相似文献
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Qian Dong Ariadna J.Torres-Arenas Guo-Hua Sun Shi-Hai Dong 《Frontiers of Physics》2020,15(1):13401-64
Complex oxide interfaces have been one of the central focuses in condensed matter physics and ma-terial science.Over the past decade,aberration corrected scanning transmission electron microscopy and spectroscopy has proven to be invaluable to visualize and understand the emerging quantum phenomena at an interface.In this paper,we briefly review some recent progress in the utilization of electron microscopy to probe interfaces.Specifically,we discuss several important challenges for electron microscopy to advance our understanding on interface phenomena,from the perspective of variable temperature,magnetism,electron energy loss spectroscopy analysis,electronic symmetry,and defects probing. 相似文献
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An ansatz of a single particle picture, known for example from the shell model, has been used to construct a model wave function which is as close as possible to an exact three-body wave function. The exact wave function is obtained by solving the Faddeev equation with the Malfliet–Tjon potential. In order to judge the quality of the model wave function, we compare correlation functions of the model wave function and the exact solution. The correlation functions differ significantly at small distances but are close to each other for larger values of their arguments. 相似文献
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王德华 《中国光学快报(英文版)》2010,(6):553-556
<正>The wave packet dynamics of the photodetachment of H~- near dielectric surface are studied by using the wave packet evolution and the autocorrelation function.The results show that the evolutions of the autocorrelation function and the wave packet in the time domain correspond well with each other. Besides,we consider the influence of the electronic state lifetime on the wave packet evolution and the autocorrelation function.Numerical simulation shows that the evolution of the photodetached electronic wave packet near the dielectric surface exhibits some properties similar to the time-resolved two-photon photoemission intensity of surface electron. 相似文献
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Edward R. Floyd 《Foundations of Physics》2007,37(9):1386-1402
Instead of investigating the interference between two stationary, rectilinear wave functions in a trajectory representation
by examining the trajectories of the two rectilinear wave functions individually, we examine a dichromatic wave function that
is synthesized from the two interfering wave functions. The physics of interference is contained in the reduced action for
the dichromatic wave function. As this reduced action is a generator of the motion for the dichromatic wave function, it determines
the dichromatic wave function’s trajectory. The quantum effective mass renders insight into the behavior of the trajectory.
The trajectory in turn renders insight into quantum nonlocality. 相似文献
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Biakynicki-Birula introduced a photon wave function similar to the matter wave function that satisfies the Schrödinger equation. Its second quantization form can be applied to investigate nonlinear optics at nearly full quantum level. In this paper, we applied the photon wave function formalism to analyze both linear optical processes in the well-known Mach–Zehnder interferometer and nonlinear optical processes for sum-frequency generation in dispersive and lossless medium. Results by photon wave function formalism agree with the well-established Maxwell treatments and existing experimental verifications. 相似文献