Evolution of Pure States into Mixed States

Details Evolution of Pure States into Mixed States Evolution of Pure States into Mixed States

1993-01-19

arxiv.org/abs/hep-th/9301082v2

Physics

High Energy Physics

High Energy Physics - Theory

6 pages

Scientific paper

In the formulation of Banks, Peskin and Susskind, we show that one can construct evolution equations for the quantum mechanical density matrix $\rho$ with operators which do not commute with hamiltonian which evolve pure states into mixed states, preserve the normalization and positivity of $\rho$ and conserve energy. Furthermore, it seems to be different from a quantum mechanical system with random sources.

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