Fast noise in the Landau-Zener theory
Abstract
We study the influence of a fast noise on Landau-Zener transitions. We demonstrate that a fast colored noise much weaker than the conventional white noise can produce transitions itself or can change substantially the Landau-Zener transition probabilities. In the limit of fast colored or strong white noise we derive asymptotically exact formulas for transition probabilities and study the time evolution of a spin coupled to the noise and a sweeping magnetic field.
- Publication:
-
Physical Review B
- Pub Date:
- April 2003
- DOI:
- arXiv:
- arXiv:cond-mat/0212016
- Bibcode:
- 2003PhRvB..67n4303P
- Keywords:
-
- 05.40.Ca;
- Noise;
- Condensed Matter - Mesoscale and Nanoscale Physics
- E-Print:
- 28 pages, 5 figures