本文用不变量理论精确求解了弱耦合玻色气体含时Schrodinger方程并研究了其时间演化问题.由于含时系统的Bogoliubov变换会导致弱耦合玻色气体准粒子表象完备基矢组存在无法自定的含时相位因子,本文通过计算玻色气体微扰前粒子数表象与准粒子表象间的变换系数,获得了弱耦合玻色气体准粒子表象的完备基矢组从而解决了这一困难.
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