We investigate the chaotic dynamics of a coupled three-level atom–molecular Bose–Einstein condensate system composed by one molecular mode and two atomic modes.With the increase of atom–molecular coupling strength,...We investigate the chaotic dynamics of a coupled three-level atom–molecular Bose–Einstein condensate system composed by one molecular mode and two atomic modes.With the increase of atom–molecular coupling strength,we reveal the emergence of chaotic oscillations of the relative population difference between two atomic modes,which can be proven by the broad windows with a huge number of frequencies in spectral density and the chaotic trajectories in phase space diagrams.The different effects of initial states on atomic population oscillations are revealed,where for more particles in the initial state of the molecular model,chaos appears in the larger parameter region of system dynamics.Furthermore,we find that strong intermolecular interaction strength can suppress chaos resulting from strong atom–molecule coupling.This is due to the difficult transformation between atomic and molecular modes,as well as the relatively independent dynamic evolution of atoms and molecules.展开更多
基金supported by the National Natural Science Foundation of China under Grant Nos.11705155 and 11647061a project supported by the Scientific Research Fund of Hunan Provincial Education Department under Grant No.20C1711+2 种基金Scientific Research Foundation of Xiangnan University for High-Level Talents,the Applied Characteristic Disciplines of Electronic Science and Technology of Xiangnan University (XNXY20221210)Innovation and Entrepreneurship Training Program for College Students in Xiangnan University ([2022]78)Scientific research project of Xiangnan University ([2022]96)。
文摘We investigate the chaotic dynamics of a coupled three-level atom–molecular Bose–Einstein condensate system composed by one molecular mode and two atomic modes.With the increase of atom–molecular coupling strength,we reveal the emergence of chaotic oscillations of the relative population difference between two atomic modes,which can be proven by the broad windows with a huge number of frequencies in spectral density and the chaotic trajectories in phase space diagrams.The different effects of initial states on atomic population oscillations are revealed,where for more particles in the initial state of the molecular model,chaos appears in the larger parameter region of system dynamics.Furthermore,we find that strong intermolecular interaction strength can suppress chaos resulting from strong atom–molecule coupling.This is due to the difficult transformation between atomic and molecular modes,as well as the relatively independent dynamic evolution of atoms and molecules.
