Abstract
The properties of solutions of the Gorini–Kossakowski-Sudarshan–Lindblad (GKSL) equation for the density operator (matrix) of a system that has nondegenerate energy spectrum and weakly interacts with a reservoir are considered. Conditions for the existence of solutions for which the density matrix has off-diagonal entries (“coherences”) not tending to zero at large times are derived.
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Acknowledgments
The author wishes to express gratitude to A. I.Mikhailov and A. E. Teretenkov for valuable remarks.
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Trushechkin, A.S. Decoherence and Coherence Preservation in the Solutions of the GKSL Equation in the Theory of Open Quantum Systems. Math Notes 106, 986–993 (2019). https://doi.org/10.1134/S000143461911035X
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DOI: https://doi.org/10.1134/S000143461911035X