Collège Doctoral - Doktorandenkollegien

Statistical Physics of Complex Systems

Coventry - Leipzig - Lviv - Nancy

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The careful application of projection methods to transport and relaxation
Jochen Gemmer
jgemmer AT uos DOT de
Fachbereich Physik
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.
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