The quantum kinetic equation is in the slowly-varying center-of-mass coordinate approximation expressed in terms of the Wigner function. The collision integral is simplified by means of the generalized Kadanoff—Baym ansatz formulated in a gauge invariant way which respects causality.
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© 2008 Springer-Verlag Berlin Heidelberg
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(2008). Quantum Distribution Functions. In: Quantum Kinetics in Transport and Optics of Semiconductors. Solid-State Sciences, vol 123. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-73564-9_8
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DOI: https://doi.org/10.1007/978-3-540-73564-9_8
Publisher Name: Springer, Berlin, Heidelberg
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