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TT: Tiefe Temperaturen

TT 2: Systeme korrelierter Elektronen I

TT 2.8: Vortrag

Montag, 24. März 2003, 11:45–12:00, HSZ304

Fermi sea in a damped harmonic oscillator — •Florian Marquardt¹ and Dmitri Golubev² — ¹Departement Physik und Astronomie, Universität Basel — ²Institut für Theoretische Festkörperphysik, Universität Karlsruhe

We consider a system of fermions in a harmonic oscillator, which are coupled to a fluctuating force deriving from a linear bath. This represents an extension of a well-known model first analyzed by Caldeira and Leggett to a case where the Pauli principle becomes important. Various properties of this quantum-dissipative many-particle system are discussed, including the Green’s functions as well as decay and dephasing of a nonequilibrium state.