title: Relaxation and dephasing in a many-fermion generalization of the Caldeira-Leggett model.
abstract: We analyze a model system of fermions in a harmonic oscillator potential under the influence of a fluctuating force generated by a bath of harmonic oscillators. This represents an extension of the well-known Caldeira-Leggett model to the case of many fermions. Using the method of bosonization, we calculate Green's functions and discuss relaxation and dephasing of a single extra particle added above the Fermi sea. We also extend our analysis to a more generic coupling between system and bath that results in complete thermalization of the system.
authors.affiliation: Department of Physics, Yale University, New Haven, Connecticut 06520, USA.
authors.forename: Florian
authors.initials: F
authors.lastname: Marquardt
authors.forename: D S
authors.initials: DS
authors.lastname: Golubev