Relativistic symmetries in the Hulth6n scalar-vector-tensor interactions

In the presence of spin and pseudospin （p-spin） symmetries, the approximate analytical bound states of the Dirac equation for scalar-vector-tensor Hulth6n potentials are obtained with any arbitrary spin-orbit coupling number using the Pekeris approximation. The Hulth6n tensor interaction is studied instead of the commonly used Coulomb or linear terms. The generalized parametric Nikiforov-Uvarov （NU） method is used to obtain energy eigenvalues and corresponding wave functions in their closed forms. It is shown that tensor interaction removes degeneracy between spin and p-spin doublets. Some numerical results are also given.     

Quantum phase transitions of fermionic atoms in an anisotropic triangular optical lattice

The effect of anisotropy caused by a confining potential on the properties of fermionic cold atoms in a triangular optical lattice is systematically investigated by using the dynamical cluster approximation combined with the continuous time quantum Monte–Carlo algorithm.The quantum phase diagrams which reflect the temperature–interaction relation and the competition between the anisotropic parameter and the interaction are presented with full consideration of the anisotropy of the system.Our results show that the system undergoes a transition from Fermi liquid to Mott insulator when the repulsive interaction reaches a critical value.The Kondo effect also can be observed in this system and the pseudogap is suppressed at low temperatures due to the Kondo effect.A feasible experiment protocol to observe these phenomena in an anisotropic triangular optical lattice with cold atoms is proposed,in which the hopping terms are closely related to the lattice confining potential and the atomic interaction can be adjusted via the Feshbach resonance.     

共面不对称条件下Ar原子(e,2e)反应的三重微分截面

采用修正的扭曲波玻恩近似(DWBA)方法,计算了共面、大能量损失和小动量转移这一特殊几何条件下电子碰撞Ar(3p6)(e,2e)反应的三重微分截面.理论方法对(e,2e)反应过程近程极化势进行了修正,并引入Gamow因子表示后碰撞相互作用(PCI).将计算结果与实验结果、标准DWBA计算结果及Gamow因子修正后的DWBA-G计算结果进行了比较,发现极化效应起着重要的作用.     

高能激光能量计溯源问题研究

由于高能激光能量计标定过程中没有标准的能量测量装置和标准的激光源,无法采用常规方法对其进行标校。提出了一种利用现有小能量计从低到高逐级多次传递不确定度的方法,以及一种利用能量等效原理对激光能量计进行标校的方法。不确定度传递法方法简单,但环节较多导致不确定度较大。等效标定法包括电标法和光标法,电标法对设计要求较高,但求解过程相对简单。光标法工程实现难度要低得多,但必须事先对灯组余热及热损失进行测算。等效法的三个条件与误差大小关系紧密,在结构设计中必须严格考虑,它是提高测量准确性的根本,其次要尽量减少不确定度传递的中间环节,最后需要对误差项进行科学分析和测定,在此基础上对这些项进行相应的修正和补偿。     

光谱法研究文多灵碱与牛血清白蛋白的键合

利用荧光增敏光谱法结合紫外光谱法研究了文多灵碱与牛血清白蛋白的相互作用。实验所得到的热力学参数表明维持药物与蛋白质的相互作用力主要是疏水作用和氢键(依据范德霍夫公式计算得ΔH0与ΔS0的值分别为-9.03kJ·mol-1和76.83J·mol-1·K-1)。根据荧光增敏的有关方程分别求得不同温度下(298K,308K和318K)药物与蛋白相互作用的结合常数及结合位点数;从紫外光谱获得的信息定性地讨论了药物与蛋白的相互作用时药物对蛋白微环境的影响。且利用Foerster能量转移理论,求得药物与蛋白间的键合距离为6.62nm。此外,基于文多灵碱的荧光敏化效应,首次探讨了药物-蛋白质体系的几种物理化参数,包括电荷密度、离解常数(pKa)及量子产率的变化效应;及共存离子对药物-蛋白质体系结合常数的影响。     

第四讲 超强激光脉冲与等离子体相互作用中高能离子的产生

近几年来，由于高功率激光技术的不断发展，利用超强激光脉冲与等离子体相互作用产生高能离子束的研究得到了极大推动．实验和理论模拟均发现，在超强激光脉冲与等离子体相互作用过程中，可以产生高亮度、小尺寸、方向性好的高能质子束和高能重离子束．这种基于超强激光的高能离子源在先进离子束成像技术、惯性约束聚变混合“快点火”、新型台面离子加速器以及医疗等方面都有很诱人的应用前景．文章主要介绍了超强激光与固体靶相互作用中高能离子束（尤其是质子束）的加速机制、高能离子束特性、常用测量方法及其潜在应用，并对最新的研究进展进行了简单介绍．     

Measurement of Gamma-Rays from 11ΛB and 12ΛC

From the ^12 C（π^＋,K^＋）^12 AC reaction the γ -rays of 261.6±0.24 ke V（7/2^＋ →5/2^＋）and 1481.7±0.7 ke V（1/2^＋ →5/2^＋） of ^11 A B,and 2667.3±2.8 keV（1^- 2 → 2^- 1）of ^12 A C hypernuclei have been identified using a large germanium detector array Hyperball2 at K6 beam line of KEK. The observed energies of the transitions 1481.7keV and 261.6 keV are significantly different from the values predicted by the shell model using the △ and SN parameters determined from the ^7 △ Li data.     

Multipartite entanglement in the interaction system between a single-mode microwave cavity field and superconducting charge qubits

This paper proposes a method of generating multipartite entanglement through using d.c. superconducting quantum interference devices (SQUID) inside a standing wave cavity. In this scheme, the d.c. SQUID works in the charge region. It is shown that, a large number of important multipartite entangled states can be generated by a controllable interaction between a cavity field and qubits. It is even possible to produce entangled states involving different cavity modes based on the measurement of charge qubits states. After such superpositions states are created, the interaction can be switched off by the classical magnetic field through the SQUID, and there is no information transfer between the cavity field and the charge qubits.     

对有电磁作用时的牛顿第三定律的讨论

在电磁学中经常可以看到这样一个例子，两个稳恒电流元I1dl1和I2dl2之间的作用力并不符合牛顿第三定律。对该问题的解释往往是：稳恒电流元不可能单独存在，稳恒电流总是形成闭合回路，可以证明两个载有稳恒电流的闭合回路之间的相互作用是符合作用反作用定律的。那么电流随时间变化的两个闭合回路之间的相互作用是否符合作用反作用定律？     

Quantum Stackelberg Duopoly of Continuous Distributed Asymmetric Information

The minimal quantization structure is employed to investigate the quantum version of the Stackelberg duopoly with continuous distributed asymmetric information, i.e a continuous distribution while the second mover has the first mover has incomplete information that obeys complete information. It is found that the effects of the positive quantum entanglement on the outcomes exhibit many interesting features due to the information asymmetry. Moreover, although the first-mover advantage is counteracted by the information asymmetry, the positive quantum entanglement still enhances the first-mover advantage and improves the first-mover tolerance of the information asymmetry beyond the classical limit.