查询词典 Hamiltonian

This spin Hamiltonian is reduced to a noninteracting fermionic system by using the Jordan-Wigner transformation, and is then diagonalised exactly. We show how to obtain the ground-state wave functions, the spectra, and the correlation functions.

本文第二章具体介绍了自旋为1/2的横磁场中的一维Ising链，通过Jordan-Wigner 变换将自旋算符变为费米算符，严格对角化其哈密顿量，得出此模型的波函数及能谱，计算出关联函数并得到由Ising 耦合引起的有序态变到无序态的量子相图。

This Al -free 980nm pump laser have many merits, such as improved catastrophic optical damage level; no degradation due to oxidation of aluminium during fabrication process and laser operation, which is desirable characteristic for multi-step growth; lower electrical and thermal resistance with GalnP cladding; better carrier confinement with GalnAsP confinement layers; Selective chemical etching between GaAs and GalnP maks precisely control for fabrication of stripe geometry lasers.· Calculated the physical parameters of ternary and quaternary III - V compoundsby interpolation formulas based on curve fits or on a linear regression, such aslattice parameter, band gap, and refractive index.· Using luttinger-kohn Hamiltonian-based propagation-matrix method presentedby S.L.

这种无Al980nm半导体激光器可以提高激光器出现腔面损伤所需的能量，消除在生长过程和应用过程中由于Al的氧化而使激光器的使用寿命缩短的问题，便于激光器的多次生长；以GaInP为盖层可以降低电阻和热阻；可以精确的控制GaAs和GaInP之间的化学刻蚀，便于激光器几何形状的控制。

Naturally, we can take as basis the eigenstates of the unperturbed Hamiltonian and expand the perturbed states in this basis.

很自然地，我们可以取未扰动哈密顿量的本征态做为基矢，来展开被扰动哈密顿量的本征态。

On the basis of the perturbation formulae of the g-factors (fourth-order) and the hyperfine structure constants (third-order) for a 3d^9 ion in tetragonal symmetry, the spin Hamiltonian parameters for the Cu(superscript 2+)-doped LaSrAlO4 crystal are theoretically investigated.

根据晶体场理论，利用3d^9离子在四角对称中自旋哈密顿参量g因子的四阶微扰公式以及超精细结构常数A因子的三阶微扰公式，对掺Cu(上标 2+)的LaSrAlO4晶体的自旋哈密顿参量作出了理论分析。

On the basis of the perturbation formulae of the g-factors (fourth-order) and the hyperfine structure constants (third-order) for a 3d9 ion in tetragonal symmetry, the spin Hamiltonian parameters for the Cu2+-doped LaSrAlO4 crystal are theoretically investigated.

根据晶体场理论，利用3d9离子在四角对称中自旋哈密顿参量g因子的四阶微扰公式以及超精细结构常数A因子的三阶微扰公式，对掺Cu2+的LaSrAlO4晶体的自旋哈密顿参量作出了理论分析。

Based on the crystal field theory, perturbation formulas of the spin Hamiltonian parameters g-factors (fourth-order) and the hyperfine structure constants (third-order) of 3d9 ions under tetragonal symmetry are established for the cases of small spin-orbit coupling coefficients and large spin-orbit coupling coefficients of the ligands.

本文基于晶体场理论，在较统一的理论模型和计算方法基础上运用微扰法分别对配体旋轨耦合系数较小和配体旋轨耦合系数较大的情况建立了3d9离子的自旋哈密顿参量g因子的四阶微扰公式和A因子的三阶微扰公式。

Since the founding of the symplectic algorithm by famous Chinese scientistFeng Kang and American scientist R.D.Ruth,the resulting theory of structure-preserving algorithm for finite dimensional Hamiltonian system has been wellestablished.

自从我国科学家冯康和美国科学家Ruth创立辛几何算法以来，由此建立的有限维Hamilton系统保结构算法的理论已日益完善，特别是在保辛结构算法即辛几何算法方面。

The present paper outlines this theory and method,especially the Hamiltonian theoretical framework of nonlinear stochastic dynamics and control proposed and developed by the present auth...

本文概述该理论方法，特别是作者提出与发展的非线性随机动力学与控制的Hamilton理论体系框架。最后建议各领域随机动力学与控制研究者进行跨学科的合作研究。

We employ the model Hamiltonian and the method of exact diagonalization tostudy the quantum behaviors of four- and five-electron quantum dots in magnetic fieldswith negligible Zeeman effect.

论文采用模型哈密顿量和精确对角化方法研究了无塞曼效应( Lande g因子为0)情况下，包含四个和五个电子的量子点在磁场下的量子行为。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了