Time-varying networks based on activation and deactivation mechanisms

A class of models for activity-driven networks is proposed in which nodes vary in two states: active and inactive.Only active nodes can receive links from others which represent instantaneous dynamical interactions. The evolution of the network couples the addition of new nodes and state transitions of old ones. The active group changes with activated nodes entering and deactivated ones leaving. A general differential equation framework is developed to study the degree distribution of nodes of integrated networks where four different schemes are formulated.     

Xe原子的等核及等电子系列离子径向波函数的性态研究

基于相对论多组态Dirac-Fock方法(MCDF方法),详细研究了Xe及类Xe离子的束缚和连续的f轨道波函数的性态,分析了沿等核系列和等电子系列f轨道径向波函数的塌缩现象.在此基础上,进一步讨论了轨道波函数的塌缩导致的强弛豫效应及其对类Xe离子的4d10-4d94f跃迁能和振子强度的影响.     

强组态相互作用对Sn离子谱线分布的影响

本文利用多组态Dirac-Fock(MCDF)方法,计算了Sn离子在不同离化度下（从SnVI到SnXIII）所产生的4p64dn-14f+4p64dn-15p+4p54dn+1 - 4p64dn的跃迁光谱,给出了组态平均能量随电离度的变化规律和理论预言的辐射光谱,并分析了组态相互作用对其的影响。     

Generating periodic interference in Bose–Einstein condensates

The interference between two condensates with repulsive interaction is investigated numerically by solving the onedimensional time-dependent Gross–Pitaevskii equation.The periodic interference pattern forms in two condensates,which are prepared in a double-well potential consisting of two truncated harmonic wells centered at different positions.Dark solitons are observed when two condensates overlap.Due to the existence of atom–atom interactions,atoms are transferred among the ground state and the excited states,which coincides with the condensate energy change.     

类氢离子基态超精细结构的理论研究

利用相对论多组态Dirac-Fock方法,系统计算了类氢离子165Ho66+, 185Re74+,187Re74+,207Pb81+, 209Bi82+, 203TI80+和205TI80+的基态超精细结构分裂以及相应的基态跃迁波长,并与相关实验数据及其它理论结果进行了对比.