Characteristic Function Approach to Density Matrix Calculations
In this paper the system of ordinary differential equations which determines the density matrix elements is converted to a system of algebraic equations with the aid of a Laplace transform. Reorganization of the resulting equations makes it possible to deal with an inversion problem. The relation between the characteristic function and the solutions of these algebraic equations is demonstrated.
KeywordsCharacteristic Function Density Matrix Density Vector Hermitian Conjugate Inversion Problem
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