Low-temperature dynamical simulation of spin-boson systems
Abstract
The dynamics of spin-boson systems at very low temperatures has been studied using a real-time path-integral simulation technique which combines a stochastic Monte Carlo sampling over the quantum fluctuations with an exact treatment of the quasiclassical degrees of freedoms. To a large degree, this special technique circumvents the dynamical sign problem and allows the dynamics to be studied directly up to long real times in a numerically exact manner. This method has been applied to two important problems: (1) crossover from nonadiabatic to adiabatic behavior in electron transfer reactions, (2) the zero-temperature dynamics in the antiferromagnetic Kondo region 1/2<K<1 where K is Kondo's parameter.
Cite
@article{arxiv.chem-ph/9411006,
title = {Low-temperature dynamical simulation of spin-boson systems},
author = {Reinhold Egger and C. H. Mak},
journal= {arXiv preprint arXiv:chem-ph/9411006},
year = {2009}
}
Comments
Phys. Rev. B (in press), 28 pages, 6 figures