|The careful application of projection methods to transport and relaxation|
|jgemmer AT uos DOT de|
|le Wednesday 09 July 2008 à 14h00|
|Salle de séminaire du groupe de Physique Statistique|
|Traditionally projection operator methods like the Nakajima-Zwanzig
approach have been applied to open system scenarios employing
projections onto product states. The validity of this approach is
routinely inferred from the separation of relaxation and correlation
timescales. It turns out that the approach may fail even if there is
separation of timescales, e.g., in the context of finite environments.
This can be (possibly) fixed by projection onto non-product states.
This generalized class of projections than also allows for a direct
approach to transport problems by projecting onto density waves.|
|PDF file |
|try on the Nancy StatPhys group website if the pdf is not available here |