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    Article

    Ray space ‘Riccati’ evolution and geometric phases for N-level quantum systems

    We present a simple derivation of the matrix Riccati equations governing the reduced dynamics as one descends from the group $$ \mathb...

    S. Chaturvedi, E. Ercolessi, G. Marmo, G. Morandi, N. Mukunda, R. Simon in Pramana (2007)

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    Article

    Wigner distributions for finite dimensional quantum systems: An algebraic approach

    We discuss questions pertaining to the definition of ‘momentum’, ‘momentum space’, ‘phase space’ and ‘Wigner distributions’; for finite dimensional quantum systems. For such systems, where traditional concepts...

    S. Chaturvedi, E. Ercolessi, G. Marmo, G. Morandi, N. Mukunda, R. Simon in Pramana (2005)