### Abstract

The derivation of non-Markovian quantum kinetic equations is reconsidered in the framework of density operators. Conventional derivations use for the decoupling of the BBGKY-hierarchy the assumption of vanishing three-particle correlations g_{123} = 0. This yields non-Markovian kinetic equations with infinite memory depth. We discuss a different closure relation to the hierarchy, which overcomes this difficulty without assumptions on weakening of initial correlations and in fact corresponds to the inclusion of selfenergy effects (beyond Hartree-Fock).

Original language | English (US) |
---|---|

Pages (from-to) | 101-113 |

Number of pages | 13 |

Journal | Contributions to Plasma Physics |

Volume | 37 |

Issue number | 2-3 |

State | Published - 1997 |

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### ASJC Scopus subject areas

- Physics and Astronomy(all)
- Condensed Matter Physics

### Cite this

*Contributions to Plasma Physics*,

*37*(2-3), 101-113.

**Quantum kinetic equations : Correlation dynamics and selfenergy.** / Bonitz, M.; Binder, Rudolf; Köhler, H. S.

Research output: Contribution to journal › Article

*Contributions to Plasma Physics*, vol. 37, no. 2-3, pp. 101-113.

}

TY - JOUR

T1 - Quantum kinetic equations

T2 - Correlation dynamics and selfenergy

AU - Bonitz, M.

AU - Binder, Rudolf

AU - Köhler, H. S.

PY - 1997

Y1 - 1997

N2 - The derivation of non-Markovian quantum kinetic equations is reconsidered in the framework of density operators. Conventional derivations use for the decoupling of the BBGKY-hierarchy the assumption of vanishing three-particle correlations g123 = 0. This yields non-Markovian kinetic equations with infinite memory depth. We discuss a different closure relation to the hierarchy, which overcomes this difficulty without assumptions on weakening of initial correlations and in fact corresponds to the inclusion of selfenergy effects (beyond Hartree-Fock).

AB - The derivation of non-Markovian quantum kinetic equations is reconsidered in the framework of density operators. Conventional derivations use for the decoupling of the BBGKY-hierarchy the assumption of vanishing three-particle correlations g123 = 0. This yields non-Markovian kinetic equations with infinite memory depth. We discuss a different closure relation to the hierarchy, which overcomes this difficulty without assumptions on weakening of initial correlations and in fact corresponds to the inclusion of selfenergy effects (beyond Hartree-Fock).

UR - http://www.scopus.com/inward/record.url?scp=0031486043&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0031486043&partnerID=8YFLogxK

M3 - Article

VL - 37

SP - 101

EP - 113

JO - Contributions to Plasma Physics

JF - Contributions to Plasma Physics

SN - 0863-1042

IS - 2-3

ER -