title: Quantum breathing of an impurity in a one-dimensional bath of interacting bosons.
abstract: By means of the time-dependent density-matrix renormalization-group (TDMRG) method we are able to follow the real-time dynamics of a single impurity embedded in a one-dimensional bath of interacting bosons. We focus on the impurity breathing mode, which is found to be well described by a single oscillation frequency and a damping rate. If the impurity is very weakly coupled to the bath, a Luttinger-liquid description is valid and the impurity suffers an Abraham-Lorentz radiation-reaction friction. For a large portion of the explored parameter space, the TDMRG results fall well beyond the Luttinger-liquid paradigm.
authors: NEST, Scuola Normale Superiore and Istituto Nanoscienze-CNR, I-56126 Pisa, Italy. s.peotta@sns.it
authors: Sebastiano
authors: S
authors: Peotta
authors: Davide
authors: D
authors: Rossini
authors: Marco
authors: M
authors: Polini
authors: Francesco
authors: F
authors: Minardi
authors: Rosario
authors: R
authors: Fazio