density operator 中文意思是什麼
density operator
解釋
密度算符-
We examin e the generation of bell state in bose - einstein condensates of two interacting species trapped in a double - well configuration analytically and the density of probability for finding the entangled bell state is given. we find that the oscillation amplitude of the probability of density for finding the entangled bell state becomes greater as the ratio of the interspecies interaction strength and the tunneling rate increases, moreover the self - interaction strength of the component a ( b ) has no effect on it. also we use the time - dependent su ( 2 ) gauge transformation to diagonalize the hamilton operator, obtain the berry phase and analytically the time - evolution operator
此外我們還研究了在雙阱玻色-愛因斯坦凝聚中糾纏態的演化，研究發現隨著組分間相互作用和隨穿率的比值的增加系統演化到bell態的概率變大，而且組分自身內在的相互作用對形成bell態的幾率沒有影響；並且用含時su （ 2 ）規范變換對角化哈密頓量得到了系統的berry位相和時間演化算符，並研究了量子隨穿過程。 -
The second part consist of chapter four. in chapter one, we study the energy density of harmonic map from finsler manifold and generalize classical result in [ se ]. in chapter two, we obtain lower estimates for the first eigenvalue of the laplace operator on a compact finsler manifold, and it generalize lichnerowicz - obata theorem [ li ] [ ob ]. in chapter three, we derive the first and second variation formula for harmonic maps between finsler manifolds. as an application, some nonexistence theorems of nonconstant stable harmonic maps from a finsler manifold to a riemannian manifold are given
第一章討論finsler流形到黎曼流形調和映射的能量密度的間隙性，推廣了[ se ]中的結果。第二章對緊致finsler流形上laplace運算元的第一特徵值的下界作了估計，推廣了黎曼流形上的lichnerowicz - obata定理[ li ] [ ob ] 。 -
In order to reduce radiation on the operator, a remote - control nuclear surface moisture - density gauge is developed by improving the original nuclear surface moisture - density gauge
摘要為減少放射源對儀器操作人員輻射的影響，對表層型核子水分密度儀進行了改進，研製出遙讀遙測式表層型核子水分密度儀。 -
We deduce easily the coherent term of quantum dynamical model ( the off - diagonal of reduced density matrix ) by improving the nature of displace operator and the nature of coherent states. then, the interaction is energies of a two - photon mechanism and the usual one - photon or liner driving mechanism. we deduce the coherent term by improving the nature of squeezing operators, displace operators and canonical transformation
其一，僅有阻尼相互作用和勢能相互作用，此時利用位移算符的性質和相干態的性質很方便地推導了量子動力學模型的相干項（約化密度矩陣的非對角元） ；其二，考慮的是既有單光子相互作用又有雙光子相互作用，這時利用相干態、壓縮算符及正則變換等的性質推導出相干項。 -
With the hamilto - nian of the interaction between the field and the atom with an intensity - dependent coupling, the evolution operator and the reduced density operators of the field and the atom are derived without taking the influence of the environment into account, then the basic work model without dissipation is established
從光場與原子依賴強度耦合相互作用的哈密頓量，推出了無環境影響的依賴強度耦合j - c模型中系統的一般時間演化算符和光場與原子的約化密度算符，建立了研究不考慮環境影響的j - c模型的一般動力學的基礎。 -
The model has been generalized to the condition with dissipation, which is an effective work of mine, and the evolution equation of the density operator is present
此外，我的一個有效工作是還把該模型推廣到有環境耗散情形，引入系統密度矩陣的演化動力學方程。
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