【摘要】 利用半经典量子理论,研究了玻色-爱因斯坦凝聚体处于非对称的约瑟夫森结的动力学行为.结果表明双势阱中不同势阱的基态能量差与其相互作用能量的比率χ=0时,凝聚体表现为约瑟夫森效应;当χ≠0时,凝聚体中既存在量子宏观隧穿效应,又存在量子宏观局域效应.更多还原

【Abstract】 Based on the semiclassical quantum theory, we study the dynamical behaviors of Bose-Einstein condensate in an asymmetric Josephson junction. It is shown that the Josephson effect appears in the system when the ratio χ of the difference of two ground state energies to the interaction energies is zero. When χ≠0, the dynamical behavior of the system shows both the macroscopic quantum tunneling and the macroscopic quantum localization.更多还原