非线性与受约束量子运动
Nonlinearity and constrained quantum motion
摘要：
当量子系统受到一个或多个由守恒量引起的约束时，导出了密度矩阵所满足的动力学方程。所得到的密度矩阵的非线性运动具有这样的性质，即演化与产生系统初始状态的纯态混合物的具体组成无关。
英文摘要：
The dynamical equation satisfied by the density matrix, when a quantum system is subjected to one or more constraints arising from conserved quantities, is derived. The resulting nonlinear motion of the density matrix has the property that the evolution is independent of the specific composition of the pure-state mixture generating the initial state of the system.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
