| 11. | This is described by a density matrix.
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| 12. | Where P is the density matrix.
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| 13. | The total state of the system is assumed to be described by a density matrix ?.
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| 14. | One of these is the use of the density matrix, and its associated master equation.
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| 15. | Therefore, for a J = 1 system, its density matrix must have quadrupole components.
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| 16. | The reduced density matrix also was evaluated for XY spin chains, where it has full rank.
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| 17. | The conditions for the evolution of the system density matrix to be described by the master equation are:
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| 18. | Here \ rho represents the initial density matrix, and the operators are expressed in the Heisenberg picture.
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| 19. | For a collapse operator C, the Lindblad superoperator, acting on the density matrix \ rho, is
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| 20. | It is formulated in the density matrix formalism and can be regarded a generalization of the Master equation.
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