CAJ | 학술논문

通过周期性调节原子间的散射长度，数值模拟了有阻尼与无阻尼两种情况下玻色爱因斯坦凝聚体中的共振效应。研究发现阻尼效应导致共振驱动频率下降和共振区间变窄。能量的相互转化在数值上形成的交差现象可以显示凝聚体是否处于共振状态，以及阻尼效应带来的区别。阻尼效应致使凝聚体出现共振时的动能受到抑制，从而导致两种情况下共振现象的差异。
통과주기성조절원자간적산사장도，수치모의료유조니여무조니량충정황하파색애인사탄응취체중적공진효응。연구발현조니효응도치공진구동빈솔하강화공진구간변착。능량적상호전화재수치상형성적교차현상가이현시응취체시부처우공진상태，이급조니효응대래적구별。조니효응치사응취체출현공진시적동능수도억제，종이도치량충정황하공진현상적차이。
By periodically varying the atomic scattering length, the authors of the paper simulate numerically resonance phenomenon in a Bose-Einstein condensate under damping and non-damping conditions. According to the experiments, the damping leads to the narrowing of resonance and the decrease of the driving frequency. Furthermore, the crossover in energy interconversion indicates whether the condensate is in resonance and the difference induced by the damping effect. In contrast to the non-damping case, the kinetic energy of condensate can not be actively excited as resonance arises in the presence of damping.