Nonperturbative renormalization-group approach for quantum dissipative systems
Quantum Physics
2009-11-07 v3 Mesoscale and Nanoscale Physics
High Energy Physics - Theory
Abstract
We analyze the dissipative quantum tunneling in the Caldeira-Leggett model by the nonperturbative renormalization-group method. We classify the dissipation effects by introducing the notion of effective cutoffs. We calculate the localization susceptibility to evaluate the critical dissipation for the quantum-classical transition. Our results are consistent with previous semiclassical arguments, but give considerably larger critical dissipation.
Cite
@article{arxiv.quant-ph/0205002,
title = {Nonperturbative renormalization-group approach for quantum dissipative systems},
author = {Ken-Ichi Aoki and Atsushi Horikoshi},
journal= {arXiv preprint arXiv:quant-ph/0205002},
year = {2009}
}
Comments
ReVTeX 10 pages, 10 eps figures; final version