Quantum mechanical exponential operators' disentangling by virtue of matrices' L\mathfrak{D}U decomposition
Hong-Yi Fan, Yuan Shao-Jie · Journal of Physics A Mathematical and Theoretical · 2008
By using decomposition of the 3 ? 3 real matrix and Dirac's coordinate representation we can derive disentangling of some exponential operators, which is useful for analyzing both squeezing and entangling mechanisms. This method may be generalized to the n ? n real matrix case.