A new method to obtain an operatorial exact solution of a wide class of Markovian master equations is presented. Its key point is the existence of a constant of motion partitioning the Hilbert space into finite-dimensional subspaces. The consequent possibility of representing the reduced density operator as a block diagonal matrix is shown. Each "block operator" evolves under the action of a non-unitary operator explicitly derived. Our mathematical approach is illustrated applying it to simple physical systems.
|Numero di pagine||8|
|Rivista||ACTA PHYSICA HUNGARICA. HEAVY ION PHYSICS|
|Stato di pubblicazione||Published - 2005|
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