Abstract
In quantum mechanics the state of a system has to be described by a vector in a Hilbert space. If the system is not in a pure state one has to introduce the density operator, which contains the information about the probabilities of the possible quantum states.
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© 1998 Springer-Verlag Berlin Heidelberg
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Honerkamp, J. (1998). Quantum Random Systems. In: Statistical Physics. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-03709-6_6
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DOI: https://doi.org/10.1007/978-3-662-03709-6_6
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-662-03711-9
Online ISBN: 978-3-662-03709-6
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