The quench dynamics of a dissipative quantum system: a renormalization group study
Mesoscale and Nanoscale Physics
2013-10-23 v2
Abstract
We study dissipation in a small quantum system coupled to an environment held in thermodynamic equilibrium. The relaxation dynamics of a system subject to an abrupt quench in the parameters of the underlying Hamiltonian is investigated using two complementary renormalization group approaches. The methods are applied to the Ohmic spin-boson model close to the coherent-to-incoherent transition. In particular, the role of non-Markovian memory for the relaxation before and after the quench of the spin-boson coupling and the Zeeman splitting of the up and down spin is investigated.
Cite
@article{arxiv.1307.3191,
title = {The quench dynamics of a dissipative quantum system: a renormalization group study},
author = {Oleksiy Kashuba and Dante M. Kennes and Mikhail Pletyukhov and Volker Meden and Herbert Schoeller},
journal= {arXiv preprint arXiv:1307.3191},
year = {2013}
}
Comments
25 pages, 11 figures