English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

Non-Markoffian effects of a simple nonlinear bath

MPS-Authors
There are no MPG-Authors in the publication available
External Resource
No external resources are shared
Fulltext (restricted access)
There are currently no full texts shared for your IP range.
Fulltext (public)

PhysRevE.66.041111.pdf
(Any fulltext), 154KB

Supplementary Material (public)

2002_Non-Markoffian.png
(Supplementary material), 29KB

Citation

Gassmann, H., Marquardt, F., & Bruder, C. (2002). Non-Markoffian effects of a simple nonlinear bath. Physical Review E, 66(4): 041111. doi:10.1103/PhysRevE.66.041111.


Cite as: https://hdl.handle.net/21.11116/0000-0001-3058-6
Abstract
We analyze a model of a nonlinear bath consisting of a single two-level system coupled to a linear bath (a classical noise force in the limit considered here). This allows us to study the effects of a nonlinear, non-Markoffian bath in a particularly simple situation. We analyze the effects of this bath onto the dynamics of a spin by calculating the decay of the equilibrium correlator of the z-component of the spin. The exact results are compared with those obtained using three commonly used approximations: a Markoffian master equation for the spin dynamics, a weak-coupling approximation, and the substitution of a linear bath for the original nonlinear bath.