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利用有序算符正规乘积内的积分技术(IWOP)和待定系数法,推导出了两粒子相对坐标算符x^1-x^2与总动量算符p^1 p^2的共同本征矢|η〉在Fock空间中的展开式,为解决这类问题提供了一种行之有效的方法,这对提高学生的学习素质和加深学生对理论知识的理解会有一定的帮助. 相似文献
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New two-mode intermediate momentum-coordinate representation with quantum entanglement and its application 下载免费PDF全文
We construct four linear composite operators for a two-particle
system and give common eigenvectors of those operators. The
technique of integration within an ordered product (IWOP) of
operators is employed to prove that those common eigenvectors are
complete and orthonormal. Therefore, a new two-mode intermediate
momentum-coordinate representation which involves quantum
entanglement for a two-particle system is proposed and applied to
some two-body dynamic problems. Moreover, the pure-state density
matrix | ξ 1 ,ξ 2 >C,DC,D< ξ 1 ,ξ 2 | is a Radon
transform of Wigner operator. 相似文献
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反相HPLC同时测定产琥珀酸放线杆菌发酵液中的有机酸与葡萄糖 总被引:10,自引:0,他引:10
提出了一种利用高效液相色谱法同时分析产琥珀酸放线杆菌发酵液中葡萄糖和有机酸的方法。在EclipseXDB C8(150mm×Φ4.6mm,5μm)色谱柱上,以5mmol LH2SO4溶液(pH2.5)作流动相,流速为1mL min,采用示差折光检测器,一次进样可同时定性及定量分析待测试样中的有机酸及葡萄糖,每一样品的分析时间不超过9min。确定了测定各物质的工作曲线的回归方程、线性范围、相关系数和检出限。测定发酵液中葡萄糖、琥珀酸和副产物乳酸的相对标准偏差在0.41%~0.89%范围内,平均回收率在99.6%~100.8%之间。 相似文献
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New approach for anti-normally and normally ordering bosonic-operator functions in quantum optics 下载免费PDF全文
In this paper, we provide a new kind of operator formula for anti-normally and normally ordering bosonic-operator functions in quantum optics, which can help us arrange a bosonic-operator function f(λQ +νP) in its anti-normal and normal ordering conveniently. Furthermore, mutual transformation formulas between anti-normal ordering and normal ordering, which have good universality, are derived too. Based on these operator formulas, some new differential relations and some useful mathematical integral formulas are easily derived without really performing these integrations. 相似文献
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反相高效液相色谱法测定产琥珀酸放线杆菌发酵液中的有机酸 总被引:10,自引:2,他引:10
提出了一种利用高效液相色谱法分析产琥珀酸放线杆菌发酵液中有机酸的方法。在EclipseXDB C8(4 .6mmi.d .× 1 5 0mm ,5 μm)色谱柱上 ,以 0 .0 0 5mol L硫酸溶液 (pH 2 .5 )作流动相 ,流速为 1mL min ,紫外检测波长 2 1 0nm。 7min内可以把 6种混合酸标样完全分离定量。发酵液经离心后直接进样分离定量 ,其中的琥珀酸、乳酸的回收率大于 97%。经多次实验结果证明 :本方法是测定琥珀酸发酵液中各有机酸的快速、有效的定量测定方法。 相似文献
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