Zeno and anti-Zeno dynamics in spin-bath models
Mesoscale and Nanoscale Physics
2010-12-08 v1
Abstract
We investigate the quantum Zeno and anti-Zeno effects in spin bath models: the spin-boson model and a spin-fermion model. We show that the Zeno-anti-Zeno transition is critically controlled by the system-bath coupling parameter, the same parameter that determines spin decoherence rate. We also discuss the crossover in a biased system, at high temperatures, and for a nonequilibrium spin-fermion system, manifesting the counteracting roles of electrical bias, temperature, and magnetic field on the spin decoherence rate.
Cite
@article{arxiv.cond-mat/0701655,
title = {Zeno and anti-Zeno dynamics in spin-bath models},
author = {Dvira Segal and David R. Reichman},
journal= {arXiv preprint arXiv:cond-mat/0701655},
year = {2010}
}