Displaying similar documents to “Complete positivity and the neutral kaon system”

Quantum moment equations for a two-band k ⋅ p Hamiltonian

Luigi Barletti (2005)

Bollettino dell'Unione Matematica Italiana

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The hydrodynamic moment equations for a quantum system described by a two-band k ⋅ p Hamiltonian are derived. In the case of pure states, it is proved that the order-0 and order-1 moment equations yield a closed system which is the two band analogue of Madelung's fluid equations.

A mathematical introduction to the Wigner formulation of quantum mechanics

Luigi Barletti (2003)

Bollettino dell'Unione Matematica Italiana

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The paper is devoted to review, from a mathematical point of view, some fundamental aspects of the Wigner formulation of quantum mechanics. Starting from the axioms of quantum mechanics and of quantum statistics, we justify the introduction of the Wigner transform and eventually deduce the Wigner equation.