40Ca+ ions are trapped and laser cooled in a miniature Paul trap. The secular motion was observed by the radio-frequency resonance of the ion cloud and Zeeman p
The new autonomous system with only three equilibrium points is introduced. This system does not belong to the generalized Lorenz systems. The novel attractors
We study the effect of mutation on the evolutionary prisoner’s dilemma in highly clustered scale-free networks. It is found that cooperation is more sensitive
The positron-impact excitation of hydrogen atoms embedded in plasma environments is investigated using the close-coupling approximation from the low to intermed