量子态

A systematic research about algebraic structure,Fockstate space representation and dynamical supersymmetry tostatistical relations of quantum system obeying parastatisticsrule is finished in the thesis.

本论文系统地研究了遵循Para统计规律的量子系统的统计关系代数结构、Fock态空间表示及动力学超对称性。

Now even the stationary atoms and standing together, it is a natural condition of angular momentum.

现在人们更把原子中的定态与驻波联系起来，十分自然地就得到了角动量量子化条件。

In this paper, quantum theory, the use of time evolution operator obtained by the first method for the system density operator of any time, and atomic reduced density matrix, and the atomic dipole squeezing conditions, numerical study of the mixed state -type atom of the three-level with single-mode optical field coherent interaction of atomic dipole squeezing effect.

本文采用全量子理论，运用时间演化算符方法先求出所求系统任意时刻的密度算符，和原子的约化密度矩阵，以及原子偶极压缩的条件，数值计算地研究了混合态型3能级与单模相干光场相互作用时原子的偶极压缩效应。

Secondly, the constrained path quantum Monte Carlo method to compute the ground-state properties of interacting fermion systems is described in detail.

然后详细叙述了用来研究相互作用费米子系统基态性质的约束路径量子蒙特卡罗方法，通过二维单带Hubbard模型中电子系统的基态能量以及各种关联函数的计算，检验了这种算法的可行性与正确性。

The end result is a 1.8 micron diameter disk with a QD density of 50 QDs/ m2 and a quality factor exceeding 15000 before the system lases.

NIST的Glenn Solomon指出，这是科学家首度见证单一量子点能态做为雷射操作模态的效应。

The properties of polarons, states of impurities and excitons in heterojunctions and quantum wells are discussed under consideration of pressure for III-V group materials and of pressure tuning of strains for II-VI group materials, respectively.

对III-V族材料计入压力效应，对II-VI族材料计入压力调制应变效应，讨论了半导体异质结、量子阱中极化子、杂质态和激子态的性质。

In this paper, we have studied the binding energies of donors and the ground state energies of a polaron in a symmetric triangular quantum well.

本文主要研究了三角形量子阱系统中的类氢杂质态结合能和自由极化子基态能量的问题。

Under an appropriate condition, the squeezed vacuum field can trap the two atoms inri.An analytical expression of emission spectrum for three-level atom interacted with two-mode cavity field is given. The effects of the initial state of system on the emission spectrum for three-level atom are explored.

我们给出了好腔中与双模腔场相互作用的三能级原子发射谱的一般表达式，探讨了系统初态对三能级原子发射谱的影响，阐明了只有原子和双模驱动场初始时刻均处于相干叠加态，原子不同跃迁通道间的量子干涉才使得原子发射谱呈现相位敏感性。

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。

In fact, the feature of isotropically metallic property at this filling is discerned from the experiment. Besides, through a simplified model, we prove that there is a discontinuous phase transition from the bubble state to the stripe state when the filling factor increases.

最后，在有平面内磁场的情况下，类比于Laughlin波函数，我们试图构造一种朗道规范下的分数量子霍耳态的变分基态波函数，这一波函数的有效性有待于进一步的精确对角化计算的验证。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。