NRG for the bosonic single-impurity Anderson model: Dynamics
Abstract
The bosonic single-impurity Anderson model (B-SIAM) is studied to understand the local dynamics of an atomic quantum dot (AQD) coupled to a Bose-Einstein condensation (BEC) state, which can be implemented to probe the entanglement and the decoherence of a macroscopic condensate. Our recent approach of the numerical renormalization group (NRG) calculation for the B-SIAM revealed a zero-temperature phase diagram, where a Mott phase with local depletion of normal particles is separated from a BEC phase with enhanced density of the condensate. As an extension of the previous work, we present the calculations of the local dynamical quantities of the B-SIAM which reinforce our understanding of the physics in the Mott and the BEC phases.
Cite
@article{arxiv.1004.3350,
title = {NRG for the bosonic single-impurity Anderson model: Dynamics},
author = {Hyun-Jung Lee and Krzysztof Byczuk and Ralf Bulla},
journal= {arXiv preprint arXiv:1004.3350},
year = {2010}
}
Comments
12 pages, 13 figures