排序方式: 共有81条查询结果,搜索用时 15 毫秒
31.
相干态表象在量子相空间分布函数中的应用 总被引:1,自引:1,他引:0
利用相干态表象和IWOP技术导出了自由热态密度矩阵的正规乘积形式,进而根据相干态表象下的Wigner函数定义重构了自由热态和热相干态的Wigner函数.结果表明利用相干态表象下的Wigner函数定义和算符的正规乘积形式可以方便简捷重构一些量子态的Wigner函数. 相似文献
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利用两粒子相对坐标和总动量的共同本征态|η〉构成的连续变量纠缠态表象,推导了转动系统的Ehrenfest定理,从而说明了在满足某些近似的情况下,量子力学不但能够与经典物理完美自洽,而且利用量子力学的规律可以导出相应的经典物理规律. 相似文献
34.
Shuai Wang 《International Journal of Theoretical Physics》2009,48(5):1459-1465
For L-C circuit, a new quantized scheme has been proposed in the context of number-phase quantization. In this quantization
scheme, the number n of the electric charge q(q=en) is quantized as the charge number operator and the phase difference θ across the capacity is quantized as phase operator. Based on the scheme of number-phase quantization and the thermo field
dynamics (TFD), the quantum fluctuations of the charge number and phase difference of a mesoscopic L-C circuit in the thermal
vacuum state, the thermal coherent state and the thermal squeezed state have been studied. It is shown that these quantum
fluctuations of the charge number and phase difference are related to not only the parameters of circuit, the squeezing parameter,
but also the temperature in these quantum states. It is proven that the number-phase quantization scheme is very useful to
tackle with quantization of some mesoscopic electric circuits and the quantum effects. 相似文献
35.
《Nuclear Physics A》1998,637(1):46-62
Attempts to apply effective field theory (EFT) methods to nonrelativistic nucleon-nucleon (NN) scattering have raised questions about the nature and limitations of an EFT expansion when used nonperturbatively. We discuss the characteristics of a meaningful EFT analysis and compare them with traditional approaches to NN scattering. A key feature of an EFT treatment is a systematic expansion in powers of momentum, which we demonstrate using an error analysis introduced by Lepage. A clear graphical determination of the radius of convergence for the momentum expansion is also obtained. We use these techniques to compare cutoff regularization, two forms of dimensional regularization, and the dibaryon approach, using a simple model for illustration. The naturalness of the parameters and predictions for bound-state energies are also shown. 相似文献
36.
Ma Xinying Wang Xueliang Chen Meifeng Li Fuchuan 《Journal of Solid State Electrochemistry》2017,21(6):1631-1637
Journal of Solid State Electrochemistry - A novel electrochemical immunoassay for glypicans-3 (GPC3) was established based on its new high affinity antibody (Ig). In this study, we used glass... 相似文献
37.
The nonlinear matrix equation X?A * X q A=Q with 0<q<1 is investigated. Two perturbation estimates for the unique positive definite solution of the equation are derived. The theoretical results are illustrated by numerical examples. 相似文献
38.
在pH 4.5的Britton-Robinson(B-R)缓冲溶液中,甲基蓝在静汞电极上分别于-0.04 V-、0.275 V和-0.675 V(vs.SCE)处产生三个还原峰。加入硫酸阿米卡星后,阿米卡星与甲基蓝反应并形成离子缔合物,使甲基蓝在-0.275 V(vs.SCE)处的还原峰峰电流下降,其下降值与阿米卡星的浓度在1.0~60.0 mg/L范围内呈良好的线性关系,其线性方程为ΔIp(nA)=-8.48 102.36c(mg/L),相关系数r=0.997,检出限为1.0 mg/L。将该方法应用于药物中阿米卡星含量的测定,回收率在97.0%~105.0%之间,RSD≤4%,结果满意。 相似文献
39.
矩阵方程X—A*X~qA=I(0<q<1)Hermite正定解的扰动分析 总被引:1,自引:1,他引:0
首先证明了非线性矩阵方程X-A~*X~qA=I(0
相似文献
40.
The mesoscopic quartz piezoelectric crystal equivalent circuit is quantized by the method of damped harmonic oscillator quantization. It is shown that, when each branch is in the thermal vacuum states, the quantum fluctuations of the voltage, and current of each loop relate with not only the equivalent circuit inherent parameter, but also the temperature and decay according to exponent along with time. 相似文献