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A Quantum Kinetic Equation for Fermi Systems Including Three-Body Correlations

✍ Scribed by Armen Sedrakian; Gerd Röpke

Publisher
Elsevier Science
Year
1998
Tongue
English
Weight
542 KB
Volume
266
Category
Article
ISSN
0003-4916

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✦ Synopsis

A single-time quantum transport equation, which includes effects beyond the quasiparticle approximation, is derived for Fermi systems in the framework of nonequilibrium real-time Green's functions theory. Ternary correlations are incorporated in the kinetic description via a cluster expansion for the self-energies (e.g., the transport vertex and the width) truncated at the level of three-body scattering amplitudes. A finite temperatureÂdensity formulation of the three-body problem is given. Corresponding three-body equations reduce to the well-known Faddeev equations in the vacuum limit. In equilibrium the equation of state contains virial corrections proportional to the third quantum virial coefficient.

📜 SIMILAR VOLUMES

Transport Equations Including Many-Parti
Transport Equations Including Many-Particle Correlations for an Arbitrary Quantum System: A General Formalism
✍ Jens Fricke 📂 Article 📅 1996 🏛 Elsevier Science 🌐 English ⚖ 560 KB

We present a new method to derive transport equations for non-relativistic quantum manyparticle systems. This method uses an equation-of-motion technique and is applicable to interacting fermions and (or) bosons in arbitrary time-dependent external fields. Using a cluster expansion of the r-particle